Further information for StarTech.com PLATE9M2P16 - 2 Port 16in DB9 Serial Port Bracket 10 Pin Header serial panel 40 64 cm
Add two extra serial ports to the back of your PC, from your motherboard. The PLATE9M2P16 Dual Port Serial Plate adds two DB9 serial ports to the rear panel of a computer, connecting to two IDC10 header connectors on the motherboard.
Please refer to this product's Technical Specifications to ensure compatibility with your motherboard.