Add a db9 serial port to the rear panel of a small form factor low profile computer. Connects to your motherboard and adds an additional db9 serial port to the back of your pc easy to use and install backed by startech.com's lifetime warranty the plate9mlp 9pin serial male to 10pin motherboard header lp slot plate adds a db9 serial port to the rear panel of small form factor low profile computer, connecting to the host computer motherboard using an idc10 connector. Please refer to this product''s technical specifications to ensure compatibility with your motherboard. What’s in the box 9 pin serial male to 10 pin motherboard header lp slot plate