Review on StarTech.com GC98FF Black DB9 to RJ45 Modular Adapter - Serial Adapter for Female DB-9 to Female RJ-45 by Uriel Arocha

This adapter comes with no pinout instructions. It doesn't look like it will take much abuse, which is to be expected given its plastic construction. As other reviewers have pointed out, the wire colors are not standard. I ordered two of these and the pinout was the same for both, so maybe they're all set up the same. If you need it, pinout of RJ45 cable (colors correspond to T-568B) and DB9: RJ45 - DB9 cable 1 (OW) - Blue cable 2 (O) - Orange 3 (WG) - Black 4 (B) - Red 5(WB ) - Green6(WG)-Yellow7(WBr)-Brown8(Br)-White