USB is a universal, general interface standard for connecting computers and electronic devices.

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Bluetooth 4.0 and transfer speeds of USB dongles

I have a general question about hardware here, specifically Bluetooth 4.0. I've been looking to upgrade my little Bluetooth USB dongle from an earlier version (I think it's ~2.1) to something newer, ...
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140 views

You need to format the disk in drive… a more mysterious case

This problem has almost drives me crazy. I DIY my first PC since 1993 and have never been facing such an unsolvable problem at all, without any clues!!!! I have a DIY PC running XEON E3-1230 and a ...
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438 views

Shift and other random keys not working on external keyboard in Mac OS X 10.6.8

I've been using a Microsoft-made external (ergonomic/split) keyboard, connected via USB, to my Mac laptop without a problem for years. My OS is 10.6.8. Out of the blue, random keys stopped working on ...
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362 views

Virtualbox loses USB connectivity with SmartCard Reader

I'm running VirtualBox inside Ubuntu 13.10 and having issues with USB connection stability. Guest operating system is Debian 7.0 and the USB device I'm trying to work with is a ACS USB card reader ...
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466 views

How to Lock Hard Disk drive and USB Slots?

Is it possible to lock the Hard Disk and USB slots in Windows XP without any software? Thanks
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2k views

Install Windows 8 on Macbook by usb drive (without bootcamp)

I have a macbook pro with Mac OS X 10.4 Tiger which doesnt support bootcamp, which for me is not a problem because I work in windows. Can anyone tell me, if there is a way to install Windows 8 using a ...
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97 views

Connecting a USB 3 hard drive to a Mac Mini

I've got a USB 3 external hard drive and a Mac Mini 2012 with USB 3 ports. If I want to get USB 3 speeds on the hard drive, I assume I need a special USB 3 cable with the blue inserts. They seem to be ...
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46 views

Samsung Home Theater Wireless usb adapter

I have a Samsung Home Theater that you can install a WLAN USB device into. When installed you will be able to get on the wireless network and view Netfilx, YouTube, Pandora, etc. There is a ...
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3k views

OpenWRT USB performance on TP-Link TL-WDR3500

Yesterday i've flashed openwrt on my new router and configured the samba server etc., anticipating to get useful transfer speeds from the USB drive that i've connected. For testing purposes (and ...
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46 views

Internet Speed Sub-Optimal on PC but fine on laptop

I built a new PC and have been using a USB wireless adapter for internet access since my router/modem is in a different room. I have 12Mbps service. speedtest.net shows 6-12Mbps for the laptop but the ...
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84 views

What kind of lag should I expect when gaming with a KVM?

I've got an iMac, and am going to get a PC for purely gaming. I'm going to use a KVM to share an external DVI monitor, USB keyboard, and USB mouse between the iMac and the PC. What kind of lag or ...
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212 views

What happens when Capturing USB Packets using Wireshark

I am trying to capture the packets sent by a Mouse to a host PC using Wireshark. Operating System - Ubuntu 12.04 Wireshark - 1.8.2 Problem 1.) Before I plug in the USB Mouse, when I start the ...
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124 views

Hard drive uninitialized when switching enclosure

I have a 3TB SATA drive which I've been using in an external USB enclosure. Today I upgraded the enclosure in order to take advantage of USB 3.0 speeds. However, in this enclosure I am unable to ...
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75 views

How to recover write priviledges for USB devices?

I work on a corporate laptop (Windows Vista), and have been granted admin rights on that machine. An IT policy has been rolled out recently which lets me copy files from my USB devices but I cannot ...
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307 views

USB hub assigning random com ports when Windows 7 PC or USB Hub are rebooted

I have four hardware devices that are plugged in through a self powered USB hub. Currently the devices are assigned COM1 COM2 COM3 COM4 through device manager as hoped. However, when rebooting the ...
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211 views

Mobile Device Center does not launch on connecting phone

I have an HTC mobile phone running WinMobile 6.5. When I plug it into my laptop (USB connection) which is running Windows 8, the OS recognises that a device has been connected but does not launch ...
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197 views

How can I get the iMac to recognize a wired mouse after disconnecting the bluetooth mouse?

So my bluetooth mouse is working fine but my kids forget to turn it off and I'm using too many batteries. I've decided to switch to a wired mouse but can't get the Mac to recognize it. It acts as if ...
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241 views

Webcam not working - drivers look fine, WIA is started, cams get detected by Windows and Skype etc

How can I debug a webcam issue if the event viewer doesn't show any errors concerning WIA or camera/hardware topics WIA is started and restarting it causes no errors/warnings in the event log ...
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314 views

how to read data from ps/2 (usb-mouse) similary like I read serial port from arduino?

How to read data from ps/2 (usb-mouse) similary like I read serial port from arduino ? For example when I press serial monitor in Arduino IDE or wen I type: "import processing.serial.*; ...... " in ...
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61 views

iPod headphone to USB adapter

I have a set of headphones that have controls specifically designed for the iPhone, that is, they send signals through the 3.5mm cable and they are interpreted by the iPhone. I would like to connect ...
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409 views

Virtual COM Port Using usbser.sys Keeps Dropping

I have a C# wpf application that is communicating with a device via a virtual com port over USB. This device is using the usbser.sys driver. Everything works normally as expected and communication is ...
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170 views

Matshita CW-8221 pulled from MacBook with USB adapter

Background I want to put together a little home media box on the cheap with a Raspberry Pi and some used parts I had. I have an original MacBook that bit the dust and but had a working optical drive. ...
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244 views

Wine screws up Pulseaudio and USB audio card when already playing ALSA stream

My setup is a Thinkpad T420 with Creative X-Fi USB audio card. Everything usually works fine, I can play multiple streams and arbitrarily move streams from one audio card to another. One use case ...
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122 views

Plugging USB sound card prevents Windows Screen saver from running

I'm developing an embedded Windows based device with some extra hardware (an information kiosk). I need second sound card in the device so I use USB Device like this but when I plug it in it ...
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38 views

What do files names like 'usbdeva.b_epX' mean on Linux after USB device got plugged in?

On gentoo Linux 2.6.30 I see the creation of the following character devices in /dev/usb, when I plug in a USB device: usbdev2.8 usbdev2.8_ep00 usbdev2.8_ep02 usbdev2.8_ep81 usbdev2.8_ep82 My ...
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367 views

How to disable USB access for Users group

I want to restrict access of USB ports for all users who belong to Users group in Windows 7 without using any third party software. Any help will be highly appreciated.
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332 views

Why does my computer no longer recognize keyboards?

This is an Asus All-in-One from 2010 running Windows 8. The computer froze. Upon reboot, the keyboard was not detected and would not power up (the lights would not activate as they usually do.) I ...
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215 views

USB disabled when installing CentOS 5.8

My USB keyboard does not response when installing CentOS 5.8 with options "linux noprobe". Given the fact that before installing from a burnt DVD, I once tried to install from a USB flash storage, it ...
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208 views

USB Floppy drive for a 3.5" regular FDD bay

I am going to be ripping out my old fan controller, and putting in a larger one in a lower bay; since I've lost the faceplate for the 3.5" FDD bay it is currently occupying, I'd like to play a USB ...
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330 views

KVM USB Passthrough and Zydas usb wireless adapter: device or resource busy

i'm tring to setup a kernel testing virtualmachine for a 80211 module. i start my machine with this command: kvm -m 512 -net nic -net vde -usb -usbdevice host:0ace:1215 ktesting.img i set up a ...
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7k views

Install Windows 7 64bit from USB drive in UEFI mode

I got a Lenovo Ideapad Y580 with Windows 8 and I want to install Windows 7 on it. I followed the instructions on this link to create a UEFI Windows 7 Install USB flash drive - but it does not work. I ...
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501 views

Can I set the default application sound level in Windows 7?

I've got a set of Logitech S150 USB speakers which have a problem with sound levels. Basically there seems to be only two levels (completely silent or ear-splittingly loud) and no middle ground. Some ...
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198 views

USB Mouse (wired) is not working on login screen after updating Ubuntu 12.04

I have installed ubuntu 12.04 and after updating it my USB Mouse (wired) stopped working on Login Screen it self. Kindly provide the solution if anybody have. Thanks in advanced.
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82 views

Install Ubuntu 10.04 usb disk

I was able to create a bootable USB disk from Ubuntu 12.10 with the following commands and it worked on my computer. However, when I did the same thing with 10.04 and tried to boot from the ext, it ...
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137 views

Can Kies provide a data connection so my phone can avoid mobile data usage?

I regularly connect my Samsung phone by USB cable to my PC to charge it up, and when I run the Samsung Kies app on the PC I can sync data too. Is it possible for my phone to use my PCs internet ...
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630 views

How do you clear the USB cache on Windows 8?

In Vista / Windows 7 it was the infcache.1 file you deleted and magically your USB devices worked again once connected. This doesn't seem to exist in Windows 8 so I'm wondering what the alternative ...
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75 views

USB 3.0 not functioning fully

After installing GNU/Linux today onto my Lenovo Y570 laptop, I ran into an issue quickly - the USB 3.0 support. 2/3 of my USB ports are 3.0 so I kind of need them. The ports are powered at the very ...
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621 views

Drive not detected in Windows 7 but Ubuntu detects it

I recently bought a Seagate Expansion 3TB (STBV3000300) external hard drive and tried running it on my computer with Windows 7 installed on it. It is not being detected by the computer. I tried ...
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241 views

1.8 VDC POWER remains on USB after SHUTDOWN (HP Compaq Pro 4300 SFF - Product ID: QZ219AV)

I am having unexpected opportunities with a USB Device failing to properly initialize on startup after a shutdown, which seems to be caused by residual power remaining on my USB Ports (after ...
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135 views

Material to use for computer system cover against UV and salty air?

I live right next to the sea and have a large window quite close to my computer setup which allows a lot of indirect sunlight to enter. I'd like to buy or make a cover for my computer system. From ...
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2k views

Install Windows 7 USB with Mountain Lion's Boot Camp? (MBP)

I was on the net the whole day and I couldn't find any clue to solve this problem... I try to install Windows 7 on my MBP with the .iso and an USB key. To do so... Boot Camp. My CD-ROM player is dead, ...
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366 views

Virtual CDrom Methods? (Like the old U3 sandisk hack)

It sucks because I used to have a sandisk U3 and now... /shrug To the point then, Ive been trying to find a cheap way to emulate a CD/DVD/BDrom through USB. The U3 USB drive I had, let me write an ...
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480 views

no sound with an USB Microphone and pulseaudio

I connected my USB Microphone to my Computer, but i cant get it to work. Pulseaudio recognizes the device, and i can see and edit it with pavucontrol in the Input Devices section. I also can select ...
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74 views

wd800B-015 usb drive installs as unknown device

Drive worked well for years but now installs as unknown device and is not accessible. I have tried many solutions with no success. I plugged the drive into a friend's computer, it installed as ...
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281 views

USB 2.0 support on legacy motherboard

One of the machines I've is a 10 year old one. I can't discard it due to some sentiment (Mom). Legacy board: Mercury 810e / on board USB 1.1 Problem: USB 2.0 ALi PCI card doesn't work as it supposed ...
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292 views

SATA Blu-Ray drive not detected via USB adapter

I'm using an SATA blu-ray drive (Lite-On IHOS104), connected via a USB adapter to my Windows 7 (32-bit) notebook. The first time I plugged the adapter in, it worked perfectly. The drive appeared in ...
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513 views

How can I mount a USB license dongle on a shared VM in VMware Workstation 9 for Linux?

I currently have VMware Workstation 9 for Linux installed on a 64-bit Ubuntu 12.04 Desktop machine. I'm using a Windows XP VM to run some software that requires a USB-based license dongle to run. When ...
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439 views

USB Networking via a Huawei 3G device EC5805 MIFI

I want to connect my MiFi through the available USB connection that I enjoy in Windows, OSX 10.5, and Mint. So far, all YDL 6.1 has done is laugh at my attempts to use the USB option in netman. I ...
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48 views

Picking right serial device

I have several identical USB to serial port adapters on my Fedora FC12 server. Each time I boot, the devices seem to change devices names (/dev/ttyUSBn). Now I will assume that the bus and device ...
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582 views

VirtualBox connect USB device to guest

I have Virtualbox 4.1.18 installed in a laptop with windows seven pro 64 bits. As many others, I have been strugglying for hours..days sharing an usb device (alfa card) with the guest machine ...