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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38
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5answers
136k views

Does a USB hub affect performance?

I have two devices I want maximum throughput and latency with (MIDI drums and MIDI keyboard for example.) Would connecting both to the same USB port via a hub effectively limit the maximum data ...
0
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1answer
24 views

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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1answer
27 views

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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0answers
2k views

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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0answers
32 views

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 ...
0
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1answer
4k views

connect a usb only printer to router without usb port via usb to ethernet adapter

I have cisco linksys router which does not have a usb port and a usb to ethernet adapter. When I am trying to connect the printer to the router using the adapter the router does not shows the device ...
0
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2answers
356 views

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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2answers
2k views

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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3answers
10k views

Can I safely connect a USB 2.0/1.1 internal pin block to a USB3.0 motherboard header?

I've been working on my new PC build with the GA-Z77X-UD5H-WB WIFI motherboard. This board comes with a wifi/bluetooth card that goes into a PCIe x1 slot... but the card also wants to be connected to ...
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1answer
3k views

USB 3 stick in USB 2 port

If I plug a USB 3 stick (with 20/60MBps write/read speed) into a USB 2 port is it possible to get this speed (because USB 2 should be able to get 480Mbps = 60MBps)? I would assume that this speed ...
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0answers
236 views

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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2answers
3k views

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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0answers
28 views

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 ...
7
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3answers
2k views

USB 3 hub can also host USB 2 devices

I understand that when I use a USB 2.0 devices on USB 3.0 ports, that I'm really just using a USB 2.0 bus along side the USB 3.0 bus. What I really need is a true USB 3.0 device that can act as a USB ...
1
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1answer
104 views

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 ...
4
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2answers
17k views

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, ...
0
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1answer
13k views

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 ...
74
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5answers
257k views

Verifying USB connection speed (USB 3 or USB 2?)

I've purchased several new USB 3 capable drives to use with my new (USB 3 capable) laptop. They connect ok but I suspect they're silently falling back to USB 2. The sustained transfer rates I'm seeing ...
7
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3answers
88k views

Extremely slow USB transfer speed

I am using Windows 7 32-bit, and have a Transcend 8 GB USB 2.0 flash drive. I have formatted the drive to NTFS using the Windows format tool. The problem is that when moving or copying files to and ...
0
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1answer
1k views

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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2answers
430 views

Performance of Windows 8 on USB 2.0 SSD

Has anyone here tried installing Windows 8 to an external USB SSD drive and booting drive from a USB 2.0 port? I also want to install Visual Studio 2012 kind of IDEs and programming related software ...
7
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5answers
68k views

Force a single USB 3.0 port to work as USB 2.0

I have several Dell XPS 13 machines that exhibit intermittent failures of the left USB 3.0 port, as described in this thread. I have lost data to silent corruption/disconnections on several external ...
0
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0answers
34 views

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 ...
1
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1answer
2k views

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 ...
0
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1answer
522 views

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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0answers
60 views

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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2answers
4k views

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 ...
0
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0answers
2k views

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:...
1
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1answer
77 views

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 ...
7
votes
5answers
19k views

Extend USB 3.0 cable

I have a couple of new USB 3.0 devices which connect to my USB 3.0 ports via the new "Blue" USB 3.0 cables that end in what looks like a USB 2.0 Type A connector. Indeed, the USB 3.0 devices will ...
4
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1answer
337 views

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....
0
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0answers
30 views

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 ...
1
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2answers
6k views

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 ...
25
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3answers
10k views

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 ...
1
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0answers
28 views

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 ...
1
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1answer
194 views

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 ...
0
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2answers
406 views

Will a 10 slot USB3 hub provide full bandwidth for 10 USB2 flash drives, and if not, where is the bottleneck?

I am wondering if a USB3 hub connected to a USB3 motherboard could sustain 10 USB2 flash drives being used simultaneously to transfer data at full bandwidth. Theoretically USB 2 speed is 60 MB/sec ...
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2answers
9k views

Why does Device Manager show “Intel(R) USB 3.0 eXtensible Host Controller - 0100 (Microsoft)” when I have only USB 2.0 ports?

My laptop's model number is an ASUS X205TA-SATM0404G. It has 2 USB 2.0 ports, which I have verified by looking up the specs online and also via the software and techniques mentioned here: How to ...
0
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1answer
279 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 ...
2
votes
3answers
1k views

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 ...
0
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1answer
2k views

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 ...
2
votes
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 ...
3
votes
0answers
181 views

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 ...
5
votes
3answers
133 views

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 ...
8
votes
4answers
120k views

USB 2.0 and USB 3.0, how can you tell the difference?

I know the speeds would obviously be a key factor, but is there any spot on way to tell if a device is USB 2.0 or 3.0 such as a USB flash drive?
0
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0answers
363 views

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 ...
0
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0answers
215 views

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 ...
66
votes
4answers
481k views

Speed comparison between USB 2.0, USB 3.0, eSATA, Firewire and Thunderbolt

Which external connection has the highest data throughput with respect to the headers used? I would appreciate a slowest to fastest list including USB 2.0, USB 3.0, FireWire 400, FireWire 800, eSATA ...
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2answers
68 views

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 ...
0
votes
4answers
42k views

Windows 8: How to change from USB 3.0 to USB 2.0

Is there a way to disable USB 3.0 and enable legacy USB 2.0 support on Windows 8? I have an old microphone (Blue Snowflake) that only works when plugged into a USB 2.0 port. Is there any way to ...