How to find out why usb 3.0 works. How do you determine which USB port is on a laptop or computer? Yaka swidkist usb
USB-accumulators, but seemingly simpler, flash drives, have significantly changed into our life, and it is easy to show people, as they do not corrode cim attachments. However, the choice of a USB-disk for bugs depends only on the design of the volume, however, those who are already stuck with the problem of full recording, also marvel at the speed. We proponuєmo rozіbratisya in vіdmіnnosti flash drives for the parameters, on the yakі rіdshe zvаtu vagu, аlє є є the main ones for USB-storage.
First USB storage devices eligible for portability and saving digital information, appeared at 2000 roci. Zavdyaki compactness, por_vnya z _nshimi noses, on today's stench practical CDs and other less technologically carried information. At the same time, such an attachment is taken like a standard river: richly someone wears like key rings, or bestows like a brown souvenir, for example, on Novy Rik.
Looking at the outbuildings, they let out a lot of houses and no less than the makers (Adata, Kingston, Apacer, Silicon Power, Corsair, Transcend, TeamGroup, Sandisk, Lexar), moreover, the maker for the coristuvach is the guarantor of strength and allows you to concentrate on the design when choosing. On the market (especially in online stores) there are no known products from China, although, claiming some characteristics, they are not true.
All the same, I put my ticket on the choice of a quickie. The development of Internet-links allows in various situations to do without sticky flash drives and access to data in any place, but don’t start the stink of the building to replace physical information.
The volume of the USB disk is a key indicator for the price (data from Yandex.Market):
4 GB - 180 rubles
8 GB -190 rubles
16 GB - 270 rubles
32 GB - 500 rubles
64 GB - 1000 rubles
128 GB - 2900 rubles
256 GB - 11000 rubles
Re-insurance of information was insured only for the average price. A lot of scribes do not indicate the security of reading and recording for carrying.
For SD- (micro-SD) cards, the package often indicates the class of attachment, which indicates only the security of the record:
Class 2 - (record speed not less than 2 MB/s)
Сlass 4 - (record speed not less than 4 MB/s)
Сlass 6 - (record speed not less than 6 MB/s)
Сlass 10 - (record speed less than 10 MB/s)
For a USB storage device, an important parameter is the USB standard (2.0 or 3.0), which determines the capacity of the device. USB stands for "Universal Serial Bus". USB 3.0 (SuperSpeed USB) has the potential to be even higher in terms of speed and productivity.
USB 2.0 in theory is due to the mother speed of 480 Mb/s, but in reality it does not reach 250 Mb/s. USB 3.0 can reach a theoretical maximum bandwidth of 4.8 Gb/s, which outperforms USB 2.0 tenfold.
A USB 2.0 flash drive for 16 GB costs about 270 rubles, similar to a USB 3.0 one - 370 rubles.
Standards USB 2.0 and USB 3.0 are rich in what is summіsnі between themselves. This means that by inserting a USB 3.0 flash drive in roses 2.0 (a USB 2.0 flash drive in roses 3.0), you can fully enter and record data, in general, the speed can be mixed either with roses or with storage.
Visually accumulating and recognizable to the 3.0 standard are evident in the middle of the blue color plastic.
How can you independently revise the reality of the promise stated on the packaging, and the swedish characteristics of the USB storage device? Tse tse allow cost-free programs the robot with yakimi is simple.
The first h2testw program (possible) allows you to evaluate the real deal, especially importantly, like buying clothes in Chinese online stores, where the seller usually tries to fool the purchase.
This program does not require installation. Let's start її and bachimo like this:
For the translation of the language program in German, to that, if you are not strong in this language, you should install the English switch in the mountain:
We leave all other switches in our places, we press the “Vrite + Verify” button for the test on the cob, we will come to the picture:
Testing is three times a day, the program records information in blocks and reads it after the record. An 8 GB USB storage device will take about 40 minutes to test. As a result, the coming sound is more likely:
And the axis looks like the result for the crushed accumulator, de virobnik declaring 64 GB, and after the fact we can 7.4 GB:
Obviously, for whom it is better to demonstrate the results of the test, the seller will turn his money back.
This program leaves files on the test disk, which you need to manually delete:
Another CrystalDiskMark program allows you to evaluate the fast characteristics of the storage device.
Universal Serial Bus - the next universal bus. Vaughn was broken up as an alternative to the protocols of parallel and sequential transmission of data. At the beginning of 1996, typing chivalry standard 1.0. An hour has passed before the appearance of the USB 2.0 standard.
Yaka swidkist usb
Vzagali, for the universal tire, chotiri is transferred different types transmission speed. You don't need to mess with the versions of USB itself. Improved data transmission speed was introduced in the skin version of the USB standard, obviously, for the support of all the previous ones. It is necessary to take into account those who have added Universal Serial Bus version 2.0 far from being able to secure data transmission on High-Speed speeds. Full-Speed is the goal, de maximum speed is left with only a few outbuildings. The next version of the USB standard is 3.0. It won't only support SuperSpeed, but three forward types of speed. So it will rely on version 2.0, but it does not replace it. High-Speed cannot be classified as a version of the 3.0 standard, so devices such as Full-Speed, Low-Speed and High-Speed are classified as USB 2.0, but not as USB 3.0.
How to designate, how usb
USB-IF (an organization USB Implementers Forum) developed a special logo for skin-type swiss. For the help of a new one, it is possible to designate the capacity between the building and the standard.
Windows System Device Manager is also called Device Manager. Help us to recognize you specific attachment USB. Vzagali, vvazhaєtsya, scho is not the best solution to the problem. We will need to try different rooted USB hubs to find out necessary accessories. How to recognize what usb is?
For the cob vіdkrієmo "Dispatcher of attachments". For whom, use the mouse to point to the "My computer" menu. With the right mouse button, select the row "Power" - "Obladnannya" and "Application Manager". They gave us the need to fire up the "Controllers of the USB universal serial bus" and control the power of the root USB hub. Sob it would be easy for us to practice, we’ll start from the bottom. Stepping forward, let's go to the Food tab or Power.
As our hub connection attachments, we may note that the fault will appear in the Attached Devices section. It is also a beastly respect for those who have a root USB equal to six ports. One of them vikoristovuєtsya pristroєm.
In order to recognize the availability of the Universal Serial Bus, we need to open the Dodatkovo or Advanced tab. Root concentrators can work at once on a small number of swedes.
USB 3.0 technology appeared in 2008. In our time, all new computers or laptops are released from support USB 3.0. But what about the vision of this technology? More swish? Can you remember to improve the portability of the port with a USB 3.0 support?
USB 3.0 add-ons combined with USB 2.0 ports will function normally, but only at the maximum speed for USB 2.0. The only shortfall for the one who stinks dear. In this article, we can see what USB 2.0 looks like USB 3.0. And also why the rest of the technology is richly beautiful.
USB is the standard, and it means the maximum speed of signal transmission through the port. The USB 2.0 standard ensures the maximum theoretical speed of signal transmission at a rate of 480 megabits per second. At the same time, USB 3.0 allows you to transfer data with a speed of 5 gigabits per second. Theoretically, USB 3.0 is ten times faster than USB 2.0.
Yakby didn’t have everything, then the information about modernization could be closed: whoever didn’t want to use the USB-storage device 10 times faster, lower at once? But it's not all that simple. The standard no longer dictates the maximum speed of data transmission. At different outbuildings, there may be other places, for example, for a rich storage hour of transmission, there will be deposits in the security of the robot and flash memory.
Real indicators of speed
Theory is good, but let's wonder how they really work USB flash drives 3.0. Here everything will be more stale in the form of a hoarder. We took the test, vikonany tomshardware.com. The test includes USB 2.0 storage, the stinks are in the lower part of the diagrams. We can get the right result.
Storage USB 2.0 building record speed 7.9 to 9.5 Mb/s, also USB drives 3.0 VID 11.9 Mb/s up to 286.2 Mb/s. Mi Bachimo, that the largest USB 3.0 disk is faster, the lower usi USB 2.0, but not rich. And the best swede is bigger lower in 28 times.
The most expensive hoarders were found the same as the most expensive ones. The best-known wearer has access to such a fastness of the sound of a chotyricanal flash memory, which lets you know about the choice of songs.
Technical features
Irrespective of those standards USB 2.0 vs USB 3.0 summіsnі mіzh themselves, the stench may deakі vіdmіnnostі budovі. To support old USB 3.0 attachments, you can use several contacts. One pair for receiving and transferring data, and for a friend - for eating. And then there is a difference between USB 2.0 and 3.0. For the organization of high-speed robotics, manual charging and other events, more contacts were added, which are recognized for robotics with a power of up to 1 ampere.
Two more were added through this twisted bets. Now the cord itself has become thick, and the maximum length of five meters has shortened to three. Zavdyaki zbіlshennyu strength strumu is now possible shvidka charging smartphones and more connected devices up to one USB socket. In addition, for the cable it was added protection from magnetic fields.
Why are USB 2.0 and USB 3.0 different? First, the number of contacts. In a different way, virobniks allow USB 3.0 ports in blue or in some cases in red color. To that, it doesn’t matter, which rose before you, it doesn’t matter.
Price of outbuildings
Price - tse, how and earlier, even more important factor. A lot of USB 2.0 flash drives can be taken even cheaper. For example, you can find a flash drive with 8 GB no more, lower for $10, and 4 GB, for $5.
In order to get a significant increase in the speed of USB 3.0, you will have to spend more than $40. Energize yourself, you are ready to spend money and for what you need to save money. Do you just need a small, cheap tool for moving documents? So USB 2.0 is a miracle. On the other hand, as speed may be more important, especially for transferring important files, you may need USB 3.0.
Select USB 3.0 storage device
USB 3.0 lets you do more high speed. And before that, how to buy the necessary accessories, how to respect other parameters, how to be the mother of the most important, for example, the security of the robot and flash memory.
If you are looking for a good and fast USB storage device for transferring large files, you will be missing five dollars. It is necessary to marvel at different tests, and then you will find out, how fast it will be possible to practice the orders of the wearer of this brand. You can play an important role in choosing USB 2.0 or USB 3.0.
Visnovki
In this article, we have looked at what USB 2.0 looks like USB 3.0. Like a bachite, a rich finish, ale brighten up its own nuances. Now you know how to upgrade USB 2.0 to USB 3.0. Respectfully, not all attachments will work better, only to the one who stinks with USB 3.0.
If you have a USB keyboard or a mouse, then, obviously, you will not mind the daily changes in speed when switching to USB 3.0. Obviously, it’s too early for all attachments to switch to this standard. There is nothing nasty in it. Ale and sensu can’t pay more for them at once. You can connect a USB 2.0 to a USB 3.0 port, even if it costs more.
І kіlkoh іnshih pristroїv, yakі we will be up to the new connection, in parallel vimіryuyuchi swidkіstі їх works.
It is reverifiable, as the speed of reading that record for the new interface is real, at the same time we will try out the controller in the "combat" minds :)
For the cob, let's test my new USB 3.0 flash drive with a capacity of 8 gigabytes. VIN Axis:
Yak bachite, the package says “super speed” and is pointed below specific meanings tsієї "super speed": read 100 MB / s (read - 100 megabytes per second) and write 20 MB / s (write - 20 megabytes per second). Under the hour of testing the obov'yazkovo perevirimo tse firmness!
Also, our test brother has one more usb-accumulator: old zhorsky drive with USB 3.0 interface from Seagate.
Let's get it right! For the cob, we unpack our flash drive and put it її entrusted with її "sister" (also for 8 gigabytes) to the USB 2.0 standard. The axis of what we have seen:
As far as we can remember, the USB 3.0 standard flash memory is a lot bigger. Why is it caused?
Let's take a look at this moment of the report. What is a typical usb-storage device of an old zrazka in a disassembled look? And looking like this:
Here we have: paid fee with one microcircuit (flash memory chip) and a small controller, which is used by the "state" + rose itself. There is nothing more to say in the building.
Now, let's look at a flash drive of the same volume (8 gigabytes), but a new (high-speed) standard:
Bachimo, that on the board there are two chips and flash memory (in the photo the stench is marked with a red name) plus a microcircuit of the controller, as they are used. With more chips, more space is needed, stars - a larger size of the design.
Let's not say here that swedish flash drives for 16 gigabytes - even more for expansion! I think now Vee, your readers, know why?
A flash drive is similar to a raid-array of zero level (Raid 0), if it is combined into one virtual cluster, the information is divided into several times for all input disks in the array in seemingly small blocks (stripes). For rahunok tsgogo reach increase the speed of robotic cluster. The width of the growth is proportional to the number of disks behind similar aggregation.
Note: in the description of the higher construction, the swedishness is reached for the rahunok of the victim of arrogance. Shards when you get out of tune, wanting one of the disks, the whole array will collapse. I repeat, the fault of the insurance is not so for the overworld of saving data (nadіynіst), for the security of their money itself.
Now we can change our minds, that the speed of the robots of the new usb 3 flash drives is available to a large extent, which makes it possible to increase the number of chips in the flash memory. As we remember, the swedishness of the robot is declared usb interface 3.0 - 5 Gb / s (Gigabit per second) - close to 600 MB / s (megabyte per second). ALE! I’ll add the same interface to the interface, as I don’t have anything to do with the work of the most advanced lanka in the “beginning” of the flash storage device (controller, data bus and the memory chips themselves).
Here the situation is similar to the one we took apart from the statistics, attachments. If it is stated on the box, the speed of the robot is razyuche vіdіznyаєєєєєєєєєєє ієї, є є є є truly
Note: vltku 2013 New version standard - USB 3.1, which allows the reach of transfer rates of 10 Gb/s (gigabit per second). I'll guess what's behind the interface, that's it. real swidkіst kіntsevogo pristroyu - richly lower.
Later, after being installed in our computer, we go into the attachment manager and step forward:
It is natural that the beginning of the work with the new addition to the system will require a driver. Well, nothing said that everything will be easy :) Idemo to the site of the picker operating system(Windows 7 32 bit). Let's install yoga. The dispatcher of the outbuildings "seems" that everything went well!
For some reason, I wanted to help myself for food, because for work at maximum speed, the new USB 3 attachments require a special podovzhuvach. We talked about the new one in the first part of the article.
Obviously, you can come and save money without delay before paying and don't "get confused", but it's my fault to turn everything over! That's why we bring our flash drive to the controller via a cable-supporting the old standard 2.0 and right down to the bottom of the screen, it's also merging like this:
It’s like it seems that it was necessary to bring it! If you want to use the new swedish outbuildings to wind up the windshield - buy a special cable (which costs about 6-8 dollars).
Now let's move on to testing. Yak mi yoga performed? I wrote down on all the noses of the very same data (about three gigabytes). Moreover, these data were an absolutely diverse set of digital information: music, video clips, one great ISO file, a lot of small files and documents, distributions of various programs and utilities.
In short, apparently, I tried to give a typical data set, so that I could save an average statistical coristuvach on the extension. And what about all the speed of writing and reading, which will hover lower, squawk us, first for everything, from a practical point of view (in a real, common situation), and not from looking at synthetic tabs?
Testing how many USB 3.0 storage devices
The testing of swedenness was carried out for the help of two programs: "" and "" you can take advantage of them and conduct your own testing. Also, the tests were carried out for the help of a tool introduced in Windows 7.
The photo below shows a screenshot with the result of reading (copying) the declared data (three gigabytes) from the "old" flash drive to standard 2.0
Kіntsevy hour, for which da hard drive my computer was folded close chotirioh whilin. Also, we have the "Shvidkist" field, shown in the photo above. Yak bachite, the average value is 13.2 MB (megabytes) per second.
The next screenshot is the same, but for the display "record" (I will re-format the flash drive) and back, after starting to record on it, before copying it to the data disk.
Recording three times in about fourteen hwilin s medium swedishness, as shown in the photo.
Now let's work out the axis: let's try to control the time and speed of moving the same data to the new flash storage standard 3.0, connecting it, for the time being, to the same port of the old standard.
What axis we have for the operation of reading (copying) from accumulating to disk.
Two words (against chotirioh for accumulating an old zrazka), from an average speed, which also transcends its counterpart - 26.5 megabytes per second.
The screenshot below shows us a photo of the speed record a set of various data with a volume of three gigabytes for a swedish flash drive:
Three hvilini (against chotirnadtsati) for an old hoarder. Mayzhe vp'atero shvidshe!
And now - respect! Zatamuvav podikh, pіdklyuєmo svydkіsnі nіsіnіkіvаch yоu vysokоshvidkіsіsnі USB 3 port and yоuєmo іtоtnogo increase іnpoznіkіv.
Spochatku, as always, is the operation of copying our data.
One quill on the Swedish port (against two on the right). Shiro kazhuchi, I ochіkuva short result.
Ale, after embarrassing me with another test (for recording), the numbers were practically the same, as in the case of connecting a swedish flash drive to a "proper" USB 2.0 port.
Let's just keep this empirical result in mind for the time being, and let's turn to the next analysis of the last three: after the completion of all our tests.
Let's run some synthetic tests at once. І why mi z « Crystal Disk Mark» (relying on the availability of the device) and the speed of the USB storage device 3.0, connected to the standard 2.0 port, is controlled.
On the screenshot, I can see that before that, as the program saw the result, the test "run" five times from a file with a size of 100 megabytes. Why did the program show three different results? On the right, the first row shows us the continuous and subsequent (sequence) operations of reading (read) and writing (write) for the file assigned to the expansion.
Row 512K shows the write speed and read speed for files with a size of 512 kilobytes, and the rest (third field) turns off the speed for even small files with a size of up to 4 kilobytes. The smaller the files and the larger their number, the more hours it takes to operate on them. Tse is fine.
And the axis - freeze for that USB 3.0 flash drive, but connected to a 3.0 swedish port.
Remember, the first screenshot of this article and statement on the packaging of the robot's security: (100 and 20 megabytes / s per read that record)? Yak bachimo - even close to the truth!
Right now, it’s time to guess our results of real copying of data, dewiring attachments, connections to the correct (2.0) and swedish (3.0) ports for operations record showed practically the same results.
The test conducted above has the very same situation! Operation reading(Read) - sharp rivok ahead, and swidk_st record(Write) zalishaetsya mayzhe imminent.
Let's get one more program to help. AS SSD Benchmark"(Possilannya on zavantazhennya - more) and wonder, what will you show out?
About what to "talk" us the screenshot below? We selected our attachments from the list of storage devices (8 GB usb 2.0 flash drive Silicon Power) and ran a new sequence test for read and write operations.
Bachimo, scho zamіr svidkosti slav: for reading 16.56 megabytes / s and for writing - 4.66 megabytes per second. As you remember from the first screenshots of our testing, - on equal results, that we were working with real copying and reading data from accumulating data (there was 13.2 for reading and 3.7 - for recording).
Now - let's conduct a freeze for our swedish storage device, connected to the same "common" port 2.0.
Yak bachimo: 33 MB/s read and 19.48 MB/s write (versus 26.5 and 16.8 MB/s real test when moving files with a volume of 3 gigabytes). Even the values are similar, and the results are close to the reliability.
Earn respect on the field acc. time(Access time - access time) on the screenshot. Vono vkazuє on zatrimka mizh command to transfer data i, vlasne, hour on the cob їх kopiyuvannya. This is the very reason (among a number of others), as they do not allow the high-speed usb 3 to be built up to quiet speeds, for which they check for the first time, so we are with you.
Immediately connect our new accumulator to port 3.0 and fix the result:
Yak i ochіkuvalios, shvidkіst operation record was left practically unchangeable, and the result of reading from the extension was pleasing (91.63 megabytes per second). Also, the hour of the hustle (Access Time) has changed, what to talk about short optimization the controller's work in case of turning to the middle of the flash memory.
Now let's take some screenshots to show us how our USB 3.0 works. old hoarder Seagate for 500 gigabytes, about which we were guessing on the cob of statistics. Axis yoga photo:
Let's try to evaluate the real speed of the robot of our old hard drive, "pleasing" you to the very same information, which we previously won for a flash drive. For the cob, add HDD to full (2.0) USB port using a computer and we will conduct write test.
Three gigabytes were saved for old disk from the computer for two hours and thirty seconds from the average speed, shown in the photo above.
Now let's carry out the same test (for recording), but connect the hard drive to the "native" swedish 3.0 port of the PC.
Recording time to this particular type, Having folded one quill and fifteen seconds (twice less), with a greater speed.
Now let's try to do two tests yourself with the help of the "AS SSD Benchmark" program. Connect the accumulator to port 2.0 and run the program:
Now - to the swedish usb 3.0 rose:
Trohi of mismatches result! :) Ale, I revisited the kіlka once - the picture did not change. Tse, perhaps, confirms the idea that until the very end of synthetic tests, it is required to be put with the most frequent precautions.
Now, as I have declared on the cob of the article, I will express my subjective thought of how the test was carried out and otrimanih for some additional results.
For me, it went like this: to see the sufficiency of the speed of the port in the USB 3.0 flash drive, put it on the keyboard and connect it to the "native" port of the blue color. Tim more, so there is simply no yoga on your computer! By itself, the presence of accumulating kilkoh, parallel to the pratsyuyuchih chips, already gives a natural increase in dryness.
Added connection to port 3.0, unfortunately, does not give an estimated increase in speed (for us, for recording operations), perhaps, through the presence of other "higher areas" of the design (data bus, which is introduced by the controller before the transfer cob). ).
Porahuyemo for pennies: a 8 gigabyte fast flash drive costs about 20 dollars (against the price of the old 2.0 standard). Test mi suggested more. Visually assess the increase in firmness can be approximately 4-5 times. Dali - the choice is yours. Chi varto pay extra "zayvі" 15 dollars for those who get more comfortable work with greater commitments? Especially for myself, I wrote: "Varty!" :)
I repeat, you don’t have a specialized USB 3.0 port in your computer, you see a great difference! The potential of the new interface, in my opinion, is more open than ever before using the current USB 3.0 hard drive, connections to the high-width port of the PC.
Obviously, it’s not a bad idea to drive all 5Gbit/s, 10Gbit/s. As we have already said, it is potentially possible to have a fast interface, but there is little real speed. Otrimati infidelity increase in swidkosti vіd vikoristannya new technologies we can already now. Why, I’m sorry, I tell you, shovni chitachі, that until the next articles on the sides of our site!
Singingly, the skin of the computer's koristuvach chuv about such an understanding, yak USB port versions 2.0 and 3.0. But not everyone knows exactly what it is. In this article, I will tell you about USB 2.0 and 3.0: the details, the complexity of the interfaces, and also about those that are so important.
As it seems logical, the USB 3.0 version is new, lower 2.0, and, apparently, it is shorter. Let's figure out what's better than that, and let's get some food about those, the stars all went well.
USB and yoga versions
USB is deciphered as a universal serial bus, and translated by Russian as a universal serial bus. Universal - it means that before it you can connect everything that is suitable, be it any attachment. USB different versions, Golovna vіdmіnіst yakіh shvidkosі roboti.
Virobniks have long gone to the level of universality. How to remember richly hto, back to back computer maw without any other ports, deyakі z yakah lost their lives until this day, for example, bulky COM with comm cables, PS / 2 with small contacts and others. Now printers, keyboards, bears and other devices can be connected via USB.
The first USB began to appear in 1994. In 1996, version 1.0 was released, which worked on a meager speed of 1.5 Mbps. After 2000, version 2.0 was released with a speed of 480 Mb/s. The whole thing is accepted by the port. In 2008, USB 3.0 was introduced, which theoretically works on a speed of 5 Gb / s.
The development of USB 3.0 was financed by a lot of light brands in the computer sphere, which led to the introduction of standardization on roses and a reduction in productivity.
USB 2.0 and 3.0: permissions
Nareshti, let's look at USB 2.0 and 3.0: the permissions of these ports are one and the same, and they are the same. Axis signs, how they stink:
- Visually it's easy to make USB 2.0 look like 3.0 - roses 3.0 have a blue color.
- Another thing, which is easy to see in practice, is the speed of transmission. Version 3.0 has a lot more to it. You can give up the declared theoretical speed (5 Gb/s), but all the same, it will be left behind version 2.0.
- Vіdminnіst USB 2.0 vіd 3.0 є strumu power. AT early version won was 500 mA, the new one has already reached 900 mA. In this rank, you can live with new USB Great number straining outbuildings.
- AT old version USB was 4 darts, the new one has 4 more. So, another type of USB0 type 3.0 is another possible cable. It also covered the maximum length of the cable 3.0 to 5 meters and made it more expensive.
- Windows XP does not support USB 3.0, so if you have a physical computer in the building it will work like 2.0. Older ones Windows versions building work out of 3.0 in total.
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USB 2.0 and 3.0 connectivity
How to connect USB attachment 2.0 for roses 3.0, then it is pracyuvatime on equal 2.0. If you connect a USB 3.0 device to a 2.0 socket, then the wine will also be on the same level as 2.0. In this way, with the summation of these interfaces, the smaller version sets the quality of the robot.
Attachments may work on other versions of USB, but they may become less productive.
Otzhe, I guess. USB 2.0 and 3.0: the first time like a robot - a new version of the best, at least a little more expensive. Today, the possession is released with interface 3.0, so the computer should be equipped with such a version. Attach different versions of the sum one by one and work nicely, even if productivity drops.
