Protection against static electricity, high voltage spikes and other dangerous voltage spikes which can damage your equipment or data signaling is accomplished by TVS's (Transient Voltage Suppressors), one for each data line. Overall features - Easy Plug and Play installation - USB interface: standard Type A female - Automatic handshake support - Baud rates up to 921.600bps - No power supply needed - Dual 16 Byte hardware data buffer (up/down stream) - Cable Length 3 feet With this FTDI chip adapter you can easily add 4 standard serial ports to your desktop, laptop or other mobile device. Serial outputs are automatically configured as additional COM ports with Windows 98, ME, 2000, XP, Vista, Linux, Mac and now also Win CE. Compatible with most GPS and PDA devices (Garmin, Mallagan, Palm), modems, printers, scanners, digital cameras and office equipment. This converter cable has protection against static electricity and surges up to 15KV which gives you reliable data transfers and protects the converter and your equipment from damage due to over voltages. USB Plug and Play allows easy installation and requires no IRQ, DMA, or I/O port resources which means more devices can be attached to your system without the hassles of device and resource conflicts. Suitable for general office, commercial and industrial use. Just like most of our other converters this adapter is using the high quality FTDI chip which makes it fully compatible with all versions of Windows (7and Vista included), Linux and Mac.