Bus Interface : USB Key Features: Easily enable IrDA function on the PC through USB port USB Plug & Play convenience Fully compatible with IrDA 1.1 and USB 1.1 specification Ir data rates from 2.4K to 115.2Kbps (SIR Mode), 576K - 1.152Mbps (MIR Mode and 4Mbps (FIR Mode) No power adapter required Window 98, ME, 2000 and XP compatible With USB extention cable