Koutech Add-On Card Model IO-MPES230 Type: PCI Express to Serial Port Card External Ports: 2 x Serial Ports Data Transfer Rate: Up to 920Kbps Operating Systems Supported: 32-bit & 64-bit Windows 95 / 98 / 98SE / Me / NT 4.0 / 2000 / XP / Vista / Server 2008 / Windows 7 / Linux / DOS Specifications: Power Input: 5V & 12V via 4-pin Molex power connector Output Voltage per Port: DC +5V or +12V Operating Temperature: 0? ~ 40 ? Dimensions: 8.7 x 6.25 x 1.85 Weight: 0.34 lbs. Package Contents: One (1) Mini PCI Express card Two (2) DB9 (9-pin) cables (10 inches) One (1) Molex power cable Software driver User manual