Black Box DB-9 To RJ-45 AdapterAn essential solution for legacy serial setups, the Black Box DB 9 To RJ 45 Adapter delivers seamless RS 232 to RS 422 connectivity with a simple, passive design. This compact adapter features a DB9 female RS 232 connector on one end and an RJ 45 connector on the other, allowing direct connection to RS 232 equipment while interfacing with RS 422 devices that use RJ 45 wiring. No power supply is required because the adapter draws its operating power