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The USB port is working slowly (it takes a long time to copy files from the flash drive)

User question

Hello.

Please tell me why my USB port is working so slowly on my PC. The fact is that on another PC I dropped several files onto a USB flash drive, and having connected it to my computer, I have been waiting for an hour for them to be copied from this flash drive to the hard drive.

Empirically, I found that the matter is in the USB port (because on other devices from the same flash drive, the file is copied many times faster). What can be done?

Michael. Yaroslavl.

Hello.

Such a problem occurs, and most often just with flash drives and external hard drives (where the speed of exchange between the USB port and the drive is very important).

In this article, I will answer why the speed of the USB port may be slow, and how to fix this problem. I think that most users will be able to figure it out on their own ...

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What to look for when the USB port is slow

1) Dealing with USB ports

There are several types of USB ports on modern computers and laptops:

  1. USB 3.0 (USB 3.1) - provides an exchange rate of up to 5 Gbps. Most popular today;
  2. USB 2.0 - exchange rate up to 480 Mbit / s. Note that USB 2.0 has three port speeds (switchable in BIOS): Low-speed (up to 1500 Kbps) - needed for keyboards, joysticks, etc .; Full-speed - up to 12 Mbps; Hi-speed - up to 480 Mbps;
  3. USB Type-C - the most modern version. Exchange speed up to 10 Gbps. However, I note that this port is not yet popular, there are very few flash drives and external hard drives with this interface!

I will add that on very old computers (laptops) you can find USB 1.1 ports. These ports work very slowly, and even now they are less and less common, so I see no point in considering them in this article ...

Please note that USB 3.0 is now marked in blue by many manufacturers (they mark both the ports themselves and, for example, flash drives).

How to tell a USB 3.0 port from a USB 2.0 port

Important!

USB 1.1, USB 2.0, USB 3.0 - backwards compatible, i.e., for example, to a USB 3.0 port - you can connect older devices designed for USB 2.0 (and vice versa). The exception can be only a very few devices that will not be able to work due to the lower data exchange rate.

A simple example.

If you connect a USB 3.0 flash drive to a USB 2.0 port, your flash drive will operate at a slower speed than it could.

If you don't know what USB ports you have

The easiest way to find out is to run the AIDA 64 utility (look for this utility and its analogues here), then open the section "USB devices / devices" .

Next, you will not only be able to find out what ports you have, but also see which port your flash drive or disk is connected to. And if it turns out that your USB 3.0 flash drive is connected to a low-speed port, then just switch it to another (if, of course, it is available ).

AIDA 64 - USB devices

For those without high-speed USB ports

If you have a laptop, then hardly anything can be advised. Although, recently on Aliexpress you can order a lot of all sorts of "priblud" for laptops, for example, there are various adapters with USB 3.0 for the ExpressCard34 slot (and there are also various options for the CD / DVD drive slot). True, you can't install this in every laptop, and it's not so easy - but the option is ...

2 Port USB 3.0 Express Card 34mm (NEC UPD720202 Hidden Adapter)

If you have a PC, you can buy a special hub (controller) connected to the PCI slot. Such hubs cost a penny, connecting is nothing complicated (it's like installing a cartridge in a console ...).

PCI controller. 4xUSB Ports

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2) Lack of drivers

Drivers are a very common cause of problems with USB ports. If they are not installed (for example, they were not updated after installing Windows), then USB may either not work at all, or work at a lower speed. First of all, pay attention to the drivers for: Chipset, USB 3.0 Host Controller, USB 3.0 Root Hub.

Important!

In general, I recommend to go to official site your laptop manufacturer (if PC - then motherboard (how to find out the model mat. PC boards)), download and install all the drivers that will be there!

Often the problem lies in the fact that during installation Windows puts "its universal" drivers, which do not work as expected.

By the way, to see for which devices there are no drivers - go to device Manager (can be opened through the Windows control panel by using the search in the top menu). In the manager, pay attention to the devices next to which the yellow exclamation mark is lit.

Device Manager - there is a problem with one driver ...

By the way, you can try to find the driver using Windows: to do this, right-click on the device, and select "Update driver" from the menu. Next, the Add Hardware Wizard should start - just follow its instructions step by step.

Update driver for unknown device

To help!

I recommend that you familiarize yourself with the best utilities for automatically finding and updating drivers. Help out in a variety of cases.

Link to article: //ocomp.info/update-drivers.html

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3) There are underestimated speeds in the BIOS

Through the BIOS, you can not only reduce the speed of the USB ports, but also disable them altogether! True, I note that this applies more to old PCs (in new ones, there are no options to underestimate the speed of work).

In the BIOS, as a rule, the USB controller setting is located in the section Advanced ... In the settings, you can select the operating mode (speed) and, in general, whether the controller will be turned on.

Pay attention to the line "Controller Mode": in it you can specify Full Speed ​​(or Hi Speed) for maximum USB speed.

Example of USB controller settings in BIOS

To help!

I recommend that you read the article on how to enter the BIOS (relevant for both computers and laptops) - //ocomp.info/kak-voyti-v-bios.html

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4) The device is connected to a low speed port

When connecting flash drives, external drives and other drives, pay attention to Windows messages. So, for example, when a USB 3.0 external HDD is connected to a USB 2.0 port, the system itself sends a warning (notification) that "The device may run faster when connected to USB 3.0." (see the example below in the screenshot).

Those. in this case, if you do not respond to the notification, you will not be working at the maximum speed that the drive can support.

This device can run faster ...

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5) Copy many small files

Probably, many have noticed one feature: many small files are copied much longer than one large one. This is due to the fact that for each file it is necessary to find free blocks on the disk, update the disk table, etc.

Therefore, before copying many small files, place them in an archive: ZIP, RAR, 7Z, etc. Moreover, this applies not only when copying data to flash drives and disks, but also for transferring files over the network.

To help!

How to zip and unzip a folder, file (compress files to save space). Mini-instruction - //ocomp.info/kak-raspakovat-arhiv-rar-7z.html

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6) Antiviruses (viruses) interfere with normal exchange

Well, the last thing I recommend to pay attention to is security programs: antiviruses, programs for combating adware, Trojans, etc.

The fact is that sometimes when they are checked and there is a total distrust of external drives, they block their work and interfere with the normal exchange rate.

I recommend turning them off for a while and checking if the exchange rate changes. Many modern antiviruses are easily disabled (for example, Avira, Avast, etc. See screenshots).

Disable Avast antivirus for 1 hour || As an example

Avira - real-time protection can be easily disabled by unchecking ...

By the way, it will not be superfluous to carry out a comprehensive scan of the system for viruses and adware (which ordinary classic antiviruses do not see). How to do this see here: //ocomp.info/esli-antivirus-ne-vidit-virusov.html

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All the best!

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