CablesOnline DB9 Null Modem Male to Female Slimline Mini Null Modem Adpater, 10-Pack (AD-N04M-10) (1) DB9 Null Modem Male to (1) DB9 Null Modem Female 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 10x Adapters included