DB9 to RJ45 | RJ45 to Serial converter | RJ45 serial adapter
Avocent RJ45-DB9(F), Serial Adapter Crossover Converter (ADB0036)
DB9 to RJ45 Modular Serial Adapter, RS-232 | Eaton
RJ45 to DB9 Female Adapter Black RS232 Modular DB9F
Adapter Serial RS232 DB9 to RJ45 Console for Efficient Business Router 5851 | eBay
Amazon.com: DTech DB9 to RJ45 Serial Adapter RS232 Female to RJ-45 Female Ethernet Converter Compatible with Standard 9 Pin RS-232 Devices : Electronics
Tripp Lite Modular Serial Adapter Ethernet to Console Server RJ45-F/DB9-F - serial adapter - DB-9 to RJ-45 - B090-A9F - Cable Connectors - CDW.com
Amazon.com: LFHUKEJI RS232 to RJ45, DB9 9-Pin Serial Port Male to RJ45 Female Cat5e/6 Ethernet LAN Extend Adapter : Everything Else