Cisco - Serial RS-449 cable (DTE) - Smart Serial (M) to DB-37 (M) - 10 ft - shielded - for P/N: SPA-4XT-SERIAL/ SPA-4XT-SERIAL=/ SPA-4XT-SERIAL-RF/ WIC-2A/S/ WIC-2A/S=/ WIC-2A/S-RF