USB 56K External Dial Up Fax Data Modem Plug and Play Computer Laptop Fax Modem for Windows 10 8 7 Vista XP for LINUX156KBPS RATE: USB 2.0 fax modem has a stable transmission rate of 56Kbps and supports V.90/K56 transmission protocol, which ensures efficient data transmission. 2QUICK CONNECTION: USB data modem can be quickly connected to a phone line for dial up Internet access, fax receiving and sending functions. 3MULTI SOFTWARE COMPATIBILITY: USB 56K external modem can download the fax software by itself, and support many kinds of fax software, such as the system comes with, for aofax, for bitware, for winfax, etc. 4EASY TO USE: USB 2.0 fax modem simply connects to your computer through the USB port to complete fax and dial up operations. 5SUPPORT OS: USB 2.0 56K external dial up voice fax data modem for Win 10/8/7/Vista/XP, for LINUX.