Compatible with: Windows Win 7 32/64, Vista 32/64 - XP32/64, - Server 2003/8 32/64, 2000, ME,98Se - Mac and Linux - Indication LED's for Power, TX and RX - No power supply needed, plug and play - No IRQs, DMA or required. No IRQ Conflicts - 3 feet (1 meter) cable - Baud rate: 300bps to 1Mbps - RS232 output power: -5.7 to +5.7VDC - USB 1.1 and 2.0 compliant - Automatic send data control - Auto detection of data speed - Zero delay automatic transmission - Built-in static and surge protection up to 600W - 5 years warranty High-end quality processor chip FT232RL from FTDI Semiconductors which is one of the best and most reliable USB serial processors on the market, including a ZT232E RS232 transciever from ZyWyn USA