M i n i P C I M o d u l e P E R - C 4 0 CPER-C40C Quick Installation Guide 71.1 Featuresz Mini-PCI Type III Interfacez Four RS-232 Ports Onboardz Full Duplex Serial Communication1.2 Specificationsz Form Factor Mini-PCI Type III A 2” x 2.35”(50.8mm x 59.6mm)z UART Chipset OXFORD OXmPCI954z Power Requirement +3.3Vz Operating Temperature 32°F ~ 140°F (0°C ~ 60°C)