Key features: Compatible with universal serial bus (USB) specifications 1.1 and 2.0 Supports RS-422 serial interface by DB-9/M connector Works with RS-422 peripherals such as POS (point-of-sale), mobile and instrumentation Plug-and-play and easy USB port installation Supports remote wake-up and power management Up to 1Mbps data transfer rate Supports USB bus-powered mode System requirement: IBM? PC or Macintosh? computer with USB 2.0 or USB 1.1 host Either the following operating systems: Windows? XP Windows? 2000 Windows? ME Windows? 98/SE Specifications: Basic power: USB bus-power mode Input port: 1 USB-A/M connector Output port: 1 DB-9/M pin connector Chipset solution: prolific Cable length: 45/180cm Operating temperature: 0 to 50 degrees C Humidity: 0% to 80% RH