Features: brand new and high quality This card capability allow for upgrade with additional serial cards to your computer easily. With DB9 9pin 2 serial ports and independent power chip. The motherboard is required to have a standard PCIE slot Faster data rates up to 5Gb/s for bus bandwidth.Plug and for Play Using high-quality PCB board, high temperature resistance, cold resistance, long-term application, and stable operation, to ensure stability RS232 adapter cable adopts immersion gold technology, good electrical conductivity, anti-oxidation to ensure good contact Specifications: Type：PCIE to RS232+DB9 Adapter Material: Metal+PCB Board Port: 2 Serial Ports Size: approx 120x95mm/4.72x3.74in Speed: approx 5Gb/s Color: Green Package Includes: 1 PC x PCI E Adapter Card note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement.