SF Cable USB to RJ11 RS422/485 Converter This USB to RS422/485 converter provides an extra connection for RS-422/485 devices via USB port from PC or Mac. It is compact, portable, and perfect for users who are always working with serial devices like PDA, Digital Camera, Modem, Cellular Phone, ISDN Terminal Adaptor, and etc. Fully Compliant with USB specification 1.1 and 2.0, Provides two (2) RJ-11 Female Phone Jack for Device Connection Data Transfers Rate 300 to 3M bps, Supports Remote Wake-Up and Power Management, Supports Hot-Swapping for a Quick Switch in Serial Devices without Shutting Down your PC Supports Bus Powered Mode, Chipset; FTDI, Cable length: 1m (3.3Ft), No external power required Window XP/Vista//7/8, Mac OS 8x/9x/10x, Linux Kernel 1.5.0 or later