StarTech.com External V.92 56K USB Fax Modem (USB56KEMH) Form Factor: external Max transfer rate: 56 Kbps Protocols & specifications: Bell 103, ITU V.21, Bell 212A, ITU V.22, ITU V.22Bis, ITU V.29, ITU V.32, ITU V.34, ITU V.90, ITU V.17, ITU V.23, ITU V.27Ter, k56flex, ITU V.92 Conserve system resources with hardware-based signal processing Compliant with common data/fax communication standards for near universal compatibility Compact, portable design makes the USB Fax Modem easy and convenient to use in tight spaces or while traveling Compatible with V.92, V.90, V.34, V.32bis, V.32, V.22bis, V.22, V.23, V.21 Bell 212A and Bell 103 data modes Compatible with V.17, V.29, V.27, V.21 Ch 2, EIA/TIA 578 Class 1 and T.31 Fax Class 1.0 fax modes Data transfer rates up to 56Kbps (down) and 33.6Kbps (up) Fax transfer rates at 14.4Kbps Powered directly from the host USB port