CablesOnline DB9 Null Modem Male to Male Slimline Data Transfer Adapter/Gender Changer , (2-Pack) (AD-N05M-2) (1) DB9 Null Modem Male to (1) DB9 Null Modem Male Connector Connect two DTE or DCE devices with no conflict in data transmission Crossed receive and transmit conductors Slim profile reduces bending and provides a secure connection ; Nickel plated construction with gold contacts 2x Adapters included