The Tyco Electronics RS232 DB9F to DB9F Null Modem Cable is a 25ft shielded cable designed for universal compatibility with a 1:1 connection split. This black cable features a Db9 Female connector on both ends and is ideal for connecting computers and other devices requiring a null modem connection. Made by Tyco Electronics in China, this unit is a reliable choice for users needing a high-quality, shielded cable for their networking needs.