PCIE x 1 to RS232 8DB9 Serial Port Card You can use the idle PCIE x 1 socket on your motherboard to expand 8 serial RS232 ports used for automatic system manufacturing and system integration. PCIE x 1 to 8 serial port card is designed for POS, ATM and other applications. It can connect multiple serial port devices such as PC, terminal, modem, printer, scanner, etc. Each port has a data rate of 921.6 Kbps. Provides the setting control signal, guarantees serial port equipment, peripheral compatibility allows you to install the multi-serial card in the shared PC or server. The PCIE to 8DB9 expansion card is equipped with an aluminium alloy heat sink with strong thermal conductivity, which can the chip from burning out for a long time and extend the life of the adapter card. In addition, the package is equipped with a small baffle of 8 cm, which can not only the use of a large PC case, but can also be used for the small PC cases of 415 x 300 x 100 mm. Colour: black red Material: PCB Size: 95 x 55mm Package Contents: 3 x RS232 Expansion Card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.