USB host controller

When connecting a USB 2.0 device, Windows displays the following message:

Install  a high speed USB host controller 

or

This device will function at reduced speed if you do not have high-speed controller installed on your computer

or

The mass storage device is a USB broadband device, which operates at a reduced speed if it is connected to a port with reduced flow. There is no USB host controller broadband installed on this computer. You must add a high speed USB host controller on this computer to benefit from increased performance

This message indicates that the USB port on your computer is recognized as a USB 1.0 or 1.1, ie a port at low flow rates. However, many devices need to be connected to a high-speed port to function.

• Identify the type of USB port

Above all, it is necessary to identify the type of USB port on this machine. One solution is to manually open the Control Panel, double-click System, then the Hardware tab click "Device Manager". In the drop-deploy "Serial Bus Controller" (possibly also "USB Root Hub".
If the words "USB 2.0" or "advanced USB Controller" is specified, then it is USB 2.0. If it is merely stated "USB Standard", then it's USB 1.0 or USB 1.1.

Another solution is to use software: Everest or SIW:
www.lavalys.com/
www.gtopala.com/

• Installing drivers

If it is USB 2.0, make sure you have installed the latest drivers from the motherboard. Check if a BIOS update is available for your motherboard. Also check if there are updated drivers for the chipset on the motherboard.

For Windows systems prior to Service Pack 2, there is also a patch to integrate the USB 2.0 support:
http://www.microsoft.com/downloads/details.aspx?FamilyID=733dd867-56a0-4956-b7fe-...

• Modify parameters of root controller

In the Device Manager, double-click on the "USB Root Hub", then uncheck "Allow the computer to turn off this device to save power"

• Using a powered hub

Installing a USB Hub having its own power supply. Allowing you connect multiple devices to a single cable, but it can also amplify the signal.

• Add a USB broadband

If they are low-speed USB ports, it is necessary to buy an additional card with USB 2.0. For laptops there are PCMCIA cards and for desktop PCs, PCI cards can be added.