Brainboxes Isolated High Retention USB 1 Port RS232 Changer Type: Serial/USB Specifications: Connector on First End:1 x 9-pin DB-9 Male RS-232 Serial Connector on Second End:1 x Female USB Package Contents: Isolated High Retention USB 1 Port RS232 50cm USB Cable Installation CD Including Manual Microsoft Signed Drivers & Utilities Quick Start Guide Parts: Lifetime