The PoweredUSB I/O Card & PoweredUSB Board are designed for desktop PC, They Porvide the cost-efficient way to have both communications and power supply to your peripheral devices with multiple choices (power using only, signal transmission using only or using both function together) . The PoweredUSB I/O Card is easy to be added to your existing desktop computer, It porvides up to 3 ports of PoweredUSB to meet various needs. The PoweredUSB I/O Card is very suitable for LCD monitor, printer, scanner, router, modem...etc. The PoweredUSB Board is designed to be built in front of panel of PC, It's suitable for most of computer peripherals, such as external hard drive, external CDRW/DVD, external USB hub, force feedback joystick, PDA or cell phone chargers...etc.