Converts any DB9 connector into RJ12 port or vice versa. Use this modular adaptor to connect smart/dumb terminals, PC and telecom equipment to serial devices. It is easy to assemble and has slotted thumbscrews to provide ease of installation. (Connectors: DB9 Female to RJ12 Female; RJ12 Pin Color Codes: #1 - White, #2 - Black, #3 - Red, #4 - Green, #5 - Yellow; #6 - Blue)