This handy little IRDA adaptor adds IRDA functionality to any USB port, its small light and very convenient. Idea for use on the road. A 100cm cable is included for desktop PCs. The ACT-IR4000US is only about the size of standard USB jack and fully compact and portable for Desktop PC and Notebook PC. The ACT-IR4000US IrDA USB adapter provides a bridge to the USB port of a Notebook/ desktop PC, allowing high speed 4M bps wireless data transfer for record synchronization, file back-up and network access. The ACT-IR4000US simply attaches to a PC's USB port and gives use the wireless data transfer for data logging, synchronization, file transfer, backup, printing or network access. This device can be used to communicate with any IRDA equipped PC, PDA, Mobile Phone or digital camera. The ACT-IR4000US takes advantage of the true plug-and play feature and the high bandwidth (12 Mbps) of USB specification. It works easily with the link application software built into Windows 2000, Millennium, 98SE and XP.