... and avoid dropping line, not requiring external power. With easy installation, it can run with operating systems such as Windows98, Windows ME ... , Windows2000, WindowsXP. Besides, with high-effect data transmission, it supports data compress protocol, V.90 (56Kbps), V.34 (33 ... USB 56K Modem, adopts ST chips and supports hot plugl It can be used by Laptops and computersl Fully complies with ...