Features: 1.EASY CONNECTION: Allows you to easily connect RS232 devices directly to the USB port of your laptop or PC, making it easy to connect USB and serial devices with hot swappable. 2.USB : USB is USB2.0, downward compatible with USB1.1. supports for Windows 98 ME 2000 XP VISTA 7, for LINX, for OS X, for WINCE and other operating systems. 3.USB SERIAL ADAPTER: USB to RS232 converter meets the needs of notebooks to connect all kinds of serial devices and is suitable for communication with mini phones, digital cameras, for MODEM, for ISDN terminal adapters. 4.SCOPE OF APPLICATION: USB to serial RS232 adapter works with modems, label writers, PDA, ATM, CNC, PLC controllers, tax printers, POS, barcode scanners, label printers and devices with DB9 serial ports. 5.PLUG AND PLAY: USB to serial RS232 converter is beautifully designed to ensure high performance and extra durability. Plug and play after driver installation, no power supply is required. specification:Item Type: USB To RS232 Converter Material: Plastic, Metal Standard: USB2.0 Compliant, Backward Compatible. Compliant With RS232 Standard USB : USB 2.0, Downward Compatible With USB 1.1 Operating Temperature: 0 To 70C (32 To 158F), 5 To 95% RH Storage Temperature: -20 To 85C (-4 To 185F), 5 To 95% RH Operating System: Support For Windows 98 ME 2000 XP VISTA 7, For LINX, For OS X, For WINCE PackageList:1 x USBtoRS232Converter 1 x Driver CD