The MXT1003MBK Black Serial Extension Cable (3m) features one DB9 male connector and one DB9 female connector, providing a high quality extension for your RS232 serial devices, which enables you to position your peripheral devices as needed. Expertly designed and constructed of top quality materials to ensure durability, this DB9 extension cable is backed by our Lifetime Warranty. Allows you to extend the reach of your serial devices by up to 3 meters, reducing cable length restrictions and providing flexibility for positioning your serial devices as needed. High quality cable shielding helps prevent EMI interference. Backed by StarTech.com lifetime warranty for dependable performance. Extend RS232 serial connections by up to 3 meters