Questions tagged [usb-2]

USB 2.0 (Hi-Speed) is a USB specification that can transmit data at up to 480 Mbit/s.

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Trying to better understand how motherboard USB 2.0 and USB 3.1 Gen1 ports max combined APS is calculated

So, I've searched dozens of similar questions on SuperUser and they all seem to focus on MAX power output on a USB PORT and do not mention anything about the total max a motherboard will be able to ...
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Ubuntu in external HDD not recognized as boot option when plugged in USB 3.0 port

I found this similar question yet unsolved. I've installed Kubuntu 20.04 on an external HDD, with Grub boot menu, configured for EFI (I'm not sure about this one). The exHDD is a USB3.0 HDD case/box. ...
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Windows 10: USB drive works fine but not shown in the Safely Remove Hardware

I've Gigabyte H410 MH motherboard for Intel core i5 10400F. I've 3 USB 3.0 ports (one front & 2 back) and 6 USB 2.0 ports (2 front & 4 back).When I connect USB drive to USB 2.0 ports (both ...
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Two out of three USB ports not working on a dual boot PC

I have an Acer Aspire 3 laptop with Linux and Windows dual boot. Two of the three USB ports stopped working on both operating systems. When I plug my phone on the non-working port I can see it’s ...
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Front USB ports not working after installing new hard drives

After replacing my hard drive with an SSD, and adding a second hard drive, my front USB ports aren't working anymore. What I've tried so far: Restarting my computer, numerous times Uninstalling ...
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USB 2.0 devices not work on my mac only USB 3.0 Working

I've a MacBook Pro 15" Unibody (Mid 2012) . The USB ports stopped working a while back; i.e.: the computer would no longer recognize any of USB devices. They are all USB 2.0 devices (external drive, ...
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Color of usb ports

I just received a Dell laptop which should have 3x USB 3.0 ports, but every USB-port was black (2.0) as I usually thought... After some research i discovered that the way to identify the port is by ...
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Will an external hard drive listed as USB-C and USB 3.0 compatible also work with USB 2.0 ports?

Western Digital specifically states that certain of their external hard drives will work with USB 2.0 and USB 3.0 (such as this drive). Similarly, they state that some of their external hard drives ...
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Device not detected with USB 2.0 extension

I interfaced a USB industrial digital camera to my PC using a 1.5 M USB 2.0 cable, and the camera was detected by the PC. But because of a length issue, I added a USB extension of 5 M length to ...
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USB Device not recoganized: Connecting Android Phone to laptop via USB C

I have a problem connecting Huawei P20 Lite to laptop via USB C. It used to work but recently it doesn't work any more. I tried installing Hisuite V9.0.3.300 below https://consumer.huawei.com/en/...
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QEMU USB passthrough -device usb-host: drive exists

I am using Qemu, running on an Arch Host to use a Windows VM, and I need to passthrough the webcam. It is an integrated webcam using USB>=2. lsusb yields for this device Bus 001 Device 002: ID 0c45:...
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Is it expected for charging a phone from a laptop via a USB hub to be ineffective?

I've got a cheap old laptop and a cheap new Android phone and a cheap unpowered USB 2.0 hub I just bought. A few minutes ago I noticed that connecting the phone to the laptop via the hub, while ...
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Is there a way to use USB 3.1 charger to charge 2.0-based devices?

I have a USB 3.1 charger supporting power delivery and quick charge technologies. Since it has a 3.1 socket, are there any adapters that would let me use that socket to plug in a regular micro-usb ...
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Why my USB flash drive become 2.0 from 3.1 and how to fix it?

I bought USB flash drive last month, I'm sure it is USB 3.1. It was so fast that time. This few days I notice it becomes so slow. 6GB data now takes 20-minutes during the transfer. And now when I ...
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Using USB-C port replicator hub with USB-A laptop and desktop

So, I've just bought a Lenovo USB-C hub (port replicator) which I want to use with my laptop and desktop computers. However, neither of my devices has USB-C ports and I can only use USB 2.0 or USB 3.0 ...
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Is it possible to connect one USB device to two systems at the same time and have the device be available for use on both systems without switching? [duplicate]

I've got a WiiU/Swtich GameCube USB adapter that I'd like to plug into my computer (device 1) as well as my Nintendo Switch (device 2) and have both devices recognize that USB adapter and the ...
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USB device only connects via hub

When I connect a USB 2.0 Lumidigm fingerprint sensor to any of a PC's USB 2.0 ports, both Windows and Linux won't detect it. It doesn't try to install any drivers, and doesn't detect a hardware change....
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Is it safe to use a micro-USB 2 cable in a USB 3 portable hard drive?

The micro-B USB 3 port seems to be somewhat backwards compatible with the old micro-USB 2 standard. I was able to charge a phone that had the micro-B USB 3 port with a micro-USB 2 cable. However, I ...
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Windows 10 on HP Elitebook detects USB3 external HD on USB3 ports as USB2

On a recently bought used HP Elitebook, both the USB 3.0 ports detect my USB 3.0 external Toshiba HDD as USB 2. That Toshiba HDD has an LED which glows blue when connected to a USB 3.0 port, or white ...
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Possibilities to increase overall USB 2.0 devices throughput with PCIe expansion card

I've checked most of the U3/U2 bandwidth questions on-line, but still have some confusions. I understood that, if I had one USB 2.0 controller and one USB 3.0 controller in my laptop, even if I ...
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How to install windows 7 when laptop only has USB 3.0 ports

I am trying to dual boot my laptop (HP envy) which is currently running windows 10 with windows 7. I continuously got errors during the windows 7 install due to my USB being in a USB 3.0 port. My ...
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Will a USB 2.0 LAN Adapter work with interrupts instead of polling if i plug it on a USB 3.0 port?

I have a LAN Adapter (HORI LAN Adapter for Nintendo Switch) that has the ASIX AX88179 USB 3.0 chipset, but it's USB 2.0. (I checked the cable plug and it doesn't have the USB 3.0's extra pins, also ...
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USB Driver - This device cannot start. (Code 10) - Insufficient system resources exist to complete the API

I've been tired trying find a solution, My USB controllers have a yellow exclamation sign in Device manager thus any USB I plug into isn't functioning until I remove the driver and reinstall it, and ...
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USB 3.0 port does not recognize USB 2.0 devices

I have Asus N580VD laptop which has two USB 2.0 ports, one USB 3.0 port type A and one USB 3.1 port type C. Yesterday I was tinkering with an Android phone, rebooting it in different modes. It was ...
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Backup USB connection for Test Cell - USB splitter design?

This is a question for a project I am working on involving an unusual use of some USB equipment. Please see the diagram. Our existing setup consists solely of a single link between the device and the ...
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Will Compressing an Entire USB Flash Drive Actually Increase Performance? [duplicate]

As we know, USB flash drives are generally very slow in data transfer rates. USB 3 has significantly increased the rates data transfers, but it's still much slower than even traditional mechanical ...
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Why are all devices sitting on USB 3.0 eXtensible Controller and none on USB Enhanced?

I'm having a bit of a strange issue here with some USB controllers and devices. I'm working with a Dell T5810 workstation, Windows 7 x64 with various USB devices connected. Mouse, Keyboard and/or ...
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Solution to USB port not accepting any cables/devices?

Is there anything that commonly happens with a full-size USB 2 port (female) that can make it impossible to insert any USB cables/devices? I have a USB 2 port in a laptop that simply won't accept any ...
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Convert USB 2.0 signal to true USB 3.0

I have a laptop which has one USB 2.0 host controller and one USB 3.0 host controller. I have many USB 2.0 devices connected (both to USB 2.0 and 3.0 ports) and I am experiencing bandwidth issues. So ...
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515 views

Adding multiple USB 2.0 controllers - what are the options?

I'm trying to connect multiple (10+) USB 2.0 cameras to a computer that has only 1 USB 2.0 controller and 1 USB 3.0 controller. From what I've learned basically the only option to increase available ...
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326 views

Usb 2.0 and esata combo max speed

What is the speed of usb 2.0 and esata combo. I am getting almost same speed on combo as well as seprate usb 2.0 port with External HDD as well pendrive 3.0. I am getting speed aorund 105 MBPS in ...
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278 views

Corrupted writes to ext hdd because of low power?

recently I've bought a case for 2.5 HDD in order to use it as an external HDD. It has USB 3.0 interface but I've also used it with older laptop which has only USB 2.0 ports. It implicates that a HDD ...
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Is there any advantage to USB 3.0 on an external DVD writer?

Given that many external DVD writers max out at 8x for read and write, and that even a 16x would require a throughput of at most 22 MB/s (which is below the low end of observed throughput for USB 2.0, ...
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How to get more full speed USB 2.0 ports on a modern laptop?

Modern laptops just have a few USB ports and to extend thoose you are supposed to use a USB hub. My issue is that I need to connect 4 highspeed USB 2.0 cameras to my laptop and while still keeping two ...
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Why does phone's screen only jump around when connecting to a specific laptop?

My phone (Sony Xperia M4 Aqua) only jumps around when plugging to my 7 year-old laptop, on all USB ports. This doesn't happen with other computer or when being charged. Using a stock cable doesn't ...
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Reliability of USB cable [closed]

MICROCHIP USB3300: 1. How many write or erase cycles is the device recommended for during its life span? 2. How many years the data written is assured to be retained? (Data retention) Please ...
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Are all USB-2 devices compatible with USB-3 port?

On my Gigabyte 880GM-USB-3 motherboard there are 2 USB-3 ports. Drivers are installed successfully in Windows 7 OS. USB-3 ports are working properly when any USB-3 devices are plugged in e.g. USB-3 ...
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USB extender cable - can multiple non-active be used to exceed the USB length limit if used with a powered hub?

If multiple non-active USB cables are chained together such that the combined cable is longer than the normal USB length limit but are placed between two powered USB hubs, will that effectively create ...
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677 views

WD HDD Works only on USB 3.0

WD My Passport Ultra is showing up a weird behavior. When i connect it with USB 3.0 it works perfectly without any issue. But when i try to connect it using USB 2.0 port it doesn't work. It shows up ...
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124 views

Avisoft-RECORDER “GetOverlappedResult” error in a Virtualbox guest Windows

Using Avisoft-RECORDER USGH in a guest Windows 7 and Windows 8.1, under Virtualbox 5.1.6-dfsg-2 of an Ubuntu 16.10 host, after a second or two of recording, I am getting the following error: title: ...
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Is a temporarily dysfunctioning of an external WD HDD a reason for not trusting the drive anymore?

I have a 2TB WD My Passport Ultra HDD (USB3), that I use both as the main storage for my 600GB photo collection (also backed-up on another HDD of course) and as a back-up device (for data from 2 ...
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Can you connect a docking station via ethernet

I have a docking station with two display ports, multiple USB 3.0, and an ethernet port. My laptop has only USB 2.0 ports. Can I connect the laptop and the docking station to a high speed switch ...
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Is a USB 3 Type A-to-A cable dangerous with USB 2 ports?

I recently purchased a USB 3.0 hub, and was surprised when I opened the box to find that it used an A-to-A cable for it’s main connection; see picture below. A “Type A” connector is the rectangular ...
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Gigabit Adapter on USB 2.0

I have a USB ethernet adapter on a netbook (Aspire One D250) that I use as a smb server to share files on my LAN. The adapter is 10/100 only, if I buy a 10/100/1000 adapter and use it on USB 2.0, will ...
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237 views

Is there such a thing as a type C USB 2.0 connection?

I came across a tablet yesterday, which advertised a type-C USB micro port, but never mentioned USB 3.0 or USB 3.1. Later, I searched more and the reviews actually said it was a USB 2.0. Is there any ...
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Can I make my USB stick even smaller?

I had this 8GB flash drive for years that I always kept in my coin purse in my wallet. It's tiny and thin. It used to be a normal flash drive with metal casing until the casing broke apart and ...
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1k views

Clone older hard drive over USB 2

I am trying to upgrade the hard drive in an old work laptop (Acer Aspire running Windows 10), but I'm having trouble getting the data onto the new drive (7200 rpm SATA 6). I'm following this article ...
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Would a 2 TB USB 3.0 WD My Passport HD overpower a powered USB 2.0 hub?

I asked a question a few months ago about what I thought was possibly a failing external USB HDD. I have disconnected that HDD and the powered USB 2.0 hub has worked better. But I noticed that the USB ...
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USB 3.0 compatibility with USB 2.0 devices

Is a pure USB 3.0 port fully compatible with USB 2.0 ? My question came when I want to buy a new motherboard. Some motherboards have USB specified as USB 3.0/USB 2.0 which clearly signifies that this ...
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1answer
382 views

Maximizing speed of USB 2.0 clients on USB 3.0 hub

I need to connect 2 USB 2.0 cameras and one USB 3.0 SSD to a single USB 3.0 hub. I would like both of the cameras to run at 480 Mbps and the SSD to use the rest of the bandwidth. Is this possible? I ...