serial - Can't figure out EIA-232 (RJ45) to DB9 cable... (seems simple!) - Electrical Engineering Stack Exchange
RJ45 serial adapter | DB9 to RJ45
8517620050
Cisco Console Cable | RJ45 to DB9 Serial | 10ft | 72-3383-01-10
Amazon.com: RJ45 to RS232,LFHUKEJI DB9 9-Pin Serial Port Male to RJ45 Female Cat5 Ethernet LAN Console 3.3Ft : Industrial & Scientific
Amazon.com: DB9 RS232 Male Port to RJ45 Female Connector Card DB9 Serial Port Extender to LAN CAT5 CAT6 RJ45 Network Ethernet Cable Adapter : Electronics