Extend existing parallel or serial connections. Quick Facts - Multipurpose RS-232 DB25 serial cables. - Extend existing serial cable up to 25 feet (7.6 m). - Guaranteed for Life! Further Details - They’re ideal for connecting a computer to a modem. - Fully molded with thumbscrews. - Feature 28 AWG conductors. - Foil shielded for EMI/RFI protection. - All 25 pins connected straight through (1–1, 2–2,…25–25). Place your serial printer or modem anywhere. Extend existing serial or parallel cables, connect a switch box, connect a modem—there are many uses for these DB extensions. These cables have two DB25 connectors (female/female, male/female, or male/male), and they’re connected straight through. If you need distances longer than 25 feet (7.6 m), see our Extended-Distance Data Cables (EDN25C) and Extended-Distance/Quiet Cables (EBN25C). These cables extend serial transmissions up to 500 feet (150 m).