My USB port no longer works.  The connection is loose.
122832
Note: There is no way to add USB to a computer through serial, PS/2 or parallel ports. With a desktop (as opposed to laptop) computer either the motherboard must support USB ports with built-in connectors or "header" connectors for attaching cable/bracket assemblies, or a PCI slot card must be used. Laptops require "PCCard" slot USB adapters. Older laptops with older versions of PCMCIA slots will not work.
380388
Assuming you are using Windows, even though you said you "went through all the driver stuff", you might want to consider booting in SAFE mode, and deleting all the instances of the USB root hub and associated devices.  This will force Windows to reload them on a reboot.  It's possible there is a device conflict that it just hasn't figured-out.  Also, you may want to check under Hardware Profiles and see if more than one profile exists for the system.  Given it's a laptop, it may have created an alternate "docked" configuration and disabled the device in that, or the default configuration. If so, delete the alternate hardware profile and let it rebuild.\n\nBe certain that the device itself isn't marked as disabled in the profile.  Given what you said in your question, it sounds like the device isn't even showing-up at all in the Device Manager? Not even as an Unknown Device?\n\nIf you insert it into the USB port and there is no audible beep to indicate that Windows knows it was inserted (or likewise if you remove it) , you likely have a hardware problem.  Even if you say for certain that the USB ports are working, it is possible that the driver and/or the hardware is failing and it's only operating as a USB 1.x device, which could make the NIC not function (especially if it is USB 2.x compliant).\n\nSince you can take the USB card to another system and say it works fine, that would appear the problem is related to your laptop.\n\nYou also might want to check the power management capabilities to ensure it is not powering down the network card and/or USB hubs to conserve power.  Even if the unit is plugged-in, if for some reason it is running a power-saving scheme, you might have this problem.\n\nif you can provide the specific version of Windows and Service Pack (or Build Number), that would be helpful.  if you are not running windows (e.g. Linux) please provide that info as well (include the distribution, release, update number and kernel from uname -a).\n\nGood Luck!
370546
Not all serial devices will work through a serial to USB adapter, so I suspect you're out of luck.\n\nUSB or PCI modems are relatively cheap - I'd suggest just picking up a new modem.
518375
I had that problem with a flash drive, I solved it by replacing the drivers for the USB host controllers, with generic ones that come with the OS.
460151
you probably have a hub and a couple of devices like mice and keyboards on there, remove a couple of devices and try again or buy a powered USB hub and use that.
200711
If you are using an older computer o/s like win98 you will need to load the driver. You can also check to see if the device shows up in device manager. You can often delete the device in device manager, then when you plug it back into the usb port in will be picked up.
192814
Try reininstalling the drivers and if this doesnt help it means that ur  usb drives have poped out.it happens if water or any conducting liquid gets inside the drives and makes a double contact,try not to use this drives again since it can ruin ur harddisk.
320865
Maybe the USB device is wonky. Or maybe you should try all the USB ports in your computer.
319603
http://www.iomegadatarecovery.com/usb-flash-data-recovery.html
639207
Well a port can't be both firewire and usb. So you need to look and see if any of them are a different shape and that will answer your question.
163739
hmmm. i had the same problem. try looking for the driver on the internet.
192963
You have to go to control panel system, and device manager and usb icon and see if any red or yellow marking on it and branching out, if yes, delete that, go to add hardware and let it detect the usb memory stick, if found install the driver, if not, your usb port (hardware) have poor contacts, wriggle the stick while plug, or plug into another usb port, check bios setting to allow usb too. If all failed your usb driver might be not suitable for the win version.
214999
yes u can\n\nusing USB ports
4941
1) Check for mouse errors by trying one from another PC...\n2) The port it plugs into may be damaged as well, so try (perhaps) a USB mouse...\n3) Run a firewall program to insure against outside access to your PC\n4) Make sure all your OS updates, AV updates, and spyware updates are current and checked
455357
could be drivers, loose connection , messed up connection,
255453
If you have an operating system older than XP you may not have installed your USB ports properly. Look for drivers on the internet. If it's a PCI USB card (i.e. one that slots into the motherboard) remove it turn on your computer, let it load, turn it off again and reinsert the card. If the computer does not recognise your your controller it is the USB port that has a problem and not your flash drive.\n\nAlso , if your using the ports at the front of the computer, they may not actually be connected to your motherboard. These ports can just be part of the case that your PC came in or are there to give you the option to upgrade\n\nHope this Helps!
542795
Might be a loose connection.  Unplug the transmitter from the PC and plug it back in again.