StarTech.com Internal PCI Express V.92 56K Data/Fax Dial Up Modem (PEX56KIM) Broad telecom compatibility with support for several common data/fax communication standards Fits almost any PC case, with included low and full profile brackets Compatible with V.92, V.90, V.34, V.32bis, V.32, V.22bis, V.22, V.23, and V.21 data modes Compatible with V.17, V.29, V.27, and V.21 fax modes Data transfer rates up to 56Kbps (down) and 48Kbps (up) Fax transfer rates at 14.4Kbps V.44 data compression Supports V8.0 video conference function