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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Direct USB type C connection preventing SD card reader from being recognized

I have a micro SD card I want to read on my M2 MacBook Pro (Ventura). I recently bought an adapter, that in theory is supposed to read said card. On the manual the reader is described as a “T-Flash (...
0 votes
1 answer
6k views

How to connect a USB only printer to router without USB port via a USB to ethernet adapter?

I have Cisco Linksys router which does not have a USB port and a USB to ethernet adapter; picture below. When I try to connect the printer to the router using the adapter the router does not shows the ...
3 votes
3 answers
6k 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 ...
1 vote
0 answers
4k 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 ...
0 votes
1 answer
607 views

Odd, “ghost failure” random USB mouse disconnects

Like a month ago while playing Counter-Strike: Global Offensive my mouse just randomly disconnected and reconnected a few times, for a few moments, then disconnected. I was using exactly the same PC ...
0 votes
0 answers
75 views

Need USB 2.0 header on USB 3.0 motherboard

I have a PC that only has 1 USB 3.0 header on the motherboard. I'm needing to plug in the Bluetooth cable from my WiFi card to a USB 2.0 header. My only real option seems to be using a right angle 3.0 ...
3 votes
2 answers
1k views

How can I force my computer to always use my external speaker?

I have an external speaker (USB2 device) on my Aspire 5 laptop, as the computer's laptop is so unloud and tinny-sounding. It works fine when it works, but for some reason, the sound sometimes gets ...
9 votes
5 answers
87k 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 votes
0 answers
106 views

Removing nonstandard USB plug from socket

An employee wanted to charge their cellphone on their desktop computer and used a PortaPow USB Data Blocker dongle. (front image; back image). The problem we are now facing is that the dongle is stuck ...
45 votes
6 answers
183k 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 ...
90 votes
6 answers
320k 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 ...
0 votes
1 answer
90 views

Best USB hub type for USB 2 devices on USB 3 port

I have 10 USB sticks that I frequently use. I want to connect them all to my computer using a powered USB hub so I have them available all the time. The USB port on my PC is USB 3 but all the USB ...
0 votes
2 answers
123 views

What is the actual performance rating of the USB connection from my MacBook Air to my Smartphone? [closed]

I have a MacBook Air (13-inch, 2017; 7,2) with Ubuntu 22.04 and two USB 3.0 ports which they offer a 5 Gbps per second data transfer. And I have a USB 3.0 cable compatible with the same data transfer ...
17 votes
1 answer
4k views

Why is there a speed increase when using a USB 2.0 device with a USB 3.0 port?

I know this question, or similar questions, have been asked before, but still I am curious… My laptop has two USB 3.0 ports and—on occasion—I will plug in a Western Digital external hard drive which ...
25 votes
3 answers
14k 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 vote
0 answers
3k views

USB 3.0 port is not detecting USB 2.0

I have two USB ports, one for USB 2.0 and the other one for USB 3.0. They worked normally until the USB 3.0 port stopped detecting the USB 2.0 flash drive, mice, keyboard, etc. But it still detects ...
0 votes
0 answers
199 views

Do there exist USB 3.0 hubs that create virtual USB 2.0 hosts?

I am splitting my original question into several questions, at the expense of clarity, because the original question was deleted for being too broad. I need a large number of USB 2.0 cameras available ...
0 votes
0 answers
27 views

USB 1/2 hardware failure, but USB 3.x works fine. Can I connect USB 1.1 peripherals over any other pins? (SuperSpeed, HDMI, ...)

In previous questions, I have sought for any non-hardware explanation, to no avail. So the situation is this: My laptop has one USB root hub, with 3x USB 3.1 A ports and 1x USB C (3.1 gen 1) port. All ...
1 vote
0 answers
475 views

USB 3 works, USB 2/1 doesn't work. The Root Hub reports "HubIs2xCapable: 0 (Is not 2.x capable)"

The USB ports on my laptop only work with USB 3.x devices, but not USB 1/2. I've confirmed with a multimeter that the DATA+/DATA- pins are silent, even when talking to a USB 3.0 drive. What could ...
0 votes
1 answer
2k 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 ...
1 vote
0 answers
1k views

Torrents slow down to a crawl

Recently I started noticing qBittorrent slow down to a crawl (from 5MB/s down to 1-3 kilobytes per second) Bear in mind, this is with a dozen or so extremely well-seeded torrents on top tier private ...
1 vote
2 answers
14k 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 ...
3 votes
0 answers
915 views

USB2 device incompatibility with USB3 computer

I have a new laptop with 2 USB2 ports and 2 USB3 ports. I have to use an USB2 RGB-D camera, namely the Softkinetic DS325. On my old laptop (only USB2 ports) everything is running as it should. On the ...
0 votes
1 answer
633 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 ...
0 votes
1 answer
489 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. ...
0 votes
2 answers
617 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 ...
1 vote
2 answers
3k 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 ...
2 votes
3 answers
12k 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 ...
1 vote
1 answer
4k 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 ...
0 votes
0 answers
434 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, ...
14 votes
2 answers
5k 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 ...
8 votes
3 answers
3k 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 vote
1 answer
1k 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 ...
6 votes
2 answers
22k 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 votes
1 answer
15k 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 ...
7 votes
3 answers
94k 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 ...
1 vote
2 answers
436 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 ...
0 votes
0 answers
68 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 ...
3 votes
1 answer
7k 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 votes
1 answer
1k 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 ...
0 votes
0 answers
88 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/...
2 votes
2 answers
6k 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 ...
1 vote
0 answers
3k 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 vote
1 answer
198 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 ...
8 votes
5 answers
21k 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 votes
1 answer
880 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 votes
0 answers
39 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 ...
2 votes
2 answers
19k 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 ...
1 vote
0 answers
32 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 vote
1 answer
400 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 ...