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Amazon.com: DB9 RS232 to RJ45 Extender, DB9 9-Pin Serial Port Female&Male to RJ45 CAT5 CAT6 Ethernet LAN Extend Adapter Cable-2pcs (2-Adapter) : Electronics
Amazon.com: RJ45 to DB9,LFHUKEJI DB9 9-Pin Serial Port Male to RJ45 Female Cat5 Ethernet LAN Console Cable 9.8Ft : Industrial & Scientific