You can purchase a USB video card almost anywhere that sells computers. Best buy is probably the best and cheapest place to find what you are looking for.
No. The Guitar Hero and Rock Band microphones are identical to typical USB microphones, and are controlled by the regular video game controller.
No it does not. The USB cable come with the PS3 Console and does not come with any extra controllers you purchase. If you need extra cable they are easy to find and purchase Yes,it does only if you buy the whole system together which comes with one or two remotes with only one USB cable.
If the controller plugs into a USB port, yes.
This is not possible. The speed of the USB controller is based on its complex chipset, which cannot be feasibly replaced. If you want USB 2.0 ports on your laptop, you will need to purchase a PC Card with a USB hub.
I/O controller card
Yes
Multiple serial, gaming, USB, and parallel ports can be established with an I/O controller card. A controller card works as an interface between the motherboard and various components on a computer.
The TrackIR controller is an optical motion tracking game controller for Microsoft Windows. It was created by NaturalPoint Inc and released in 2001. It is connected via USB to a computer.
The cheapest places to purchase a reasonably priced USB video camera are: Walmart, Amazon, eBay, Office Depot, and most other stores that sell cameras and camera related equipment.
A USB host controller is a piece of hardware. It is usually incorporated into the southbridge in your motherboard. As such, it cannot be downloaded. If you want to upgrade a low-speed USB controller to a high speed controller you will have to buy a new high-speed controller. Changes are the old controller is not removeable and not upgradeable.
Yes it is possible to use a xbox controller (i have done it) but you need to use 3rd party programs to tell the controller what to do in game.