AYA 25Ft (25 Feet) IEEE-1284 DB25 M/M (Male to Male) Parallel Serial Cable UL Certified UL Certified, RoHS Compliant Connector 1: DB25 Male and Connector 2: DB25 Male Connect your printer, modem or other RS-232 serial/parallel device to a switchbox Each cable is foil shielded for EMI/RFI protection Seventeen pair wire twisted with at least 36 turns per meter, molded connectors, foil shielding and 85% coverage braid soldered 360 to the connector shell all provide maximum resistance against harmful EMI/RFI, and help you to achieve the maximum performance from your peripheral.