Don't sacrifice convenience when determining where to place your hardware. A DB9 F/F cable can convert an existing DB9 M/M cable to a DB9 M/F cable for added flexibility. Each cable comes fully shielded to prevent unwanted EMI/RFI interference, and the fully snagless cable design delivers excellent strain relief. Connector thumbscrews provide a quick and easy connection every time. All lines are wired straight through.