The C2G Parallel or Moden Extension Cable male to male, allows direct attach to your printer, modem or other RS-232 serial/parallel device to a switchbox. Connect your printer, modem or other DB25 serial/parallel devices to a switchbox. Fully snagless connectors with thumbscrew provide you with a quick and easy connection every time. All 25 lines wired straight through All 25 lines are wired straight through pin-to-pin for ease of compatibility. Each cable is foil shielded for EMI/RFI protection, and is available fully snagless with thumbscrew connectors for a fast, easy connection every time. Lifetime guarantee, All C2G electrical cables are designed and tested here in the UK to the highest standards. Fully compliant.