Commonly, there are 2 types of COM header, with different pin assignments. That's the reason why we created V1 and V2 internal serial cables to work with these 2 headers.
For all Asus motherboards, you can use our V1 cable. For other brands of motherboard, you need to check the pin assignments (more informations at the bottom of the page).
SERIAL 9 PIN INTERNAL V1
1. CD - carrier detect
Most motherboards provide 2 internal serial ports, which means you can connect up to 2 FRONTX serial ports.
The headers are commonly named as COM 1 and COM 2. Each header usually consists of 10 pins arranged in 2 parallel rows, i.e. 5 pins on each row. The pin no. 10 is a "dummy" pin (no connection required).
You need to check your motherboard manual to find out the location of the serial port headers (COM 1 and COM 2). Then, you have to check the pin assignments to make sure that they match the pins assigments illustrated in the drawing above.
Simply plug the header connector onto either one of the 2 serial port headers. Please take note of the orientation of the connector in relation to pin no. 1.
For some old motherboards, the pin assigments are not stated in the manual. It simply indicates pin 1 only. This is because the serial cable was bundled with the motherboard, so the manufacturer assumed that you do not need to know the pin assignments.
If the pin assignments of your serial port header/pin-out are not known, one easy way to check if FRONTX cable works with your motherboard is to open up the serial cable that was bundled with it, and see how the wires are soldered. If it is the same as the picture below, it means this cable (CPX102-2 Serial 9 Pin Internal V1) works with your motherboard. Otherwise, you need to use CPX102-2B Serial 9 Pin Internal V2.
Refer to the picture above, please note that line 1 is connected to pin 1, line 2 to pin 2, line 3 to pin 3, etc.