178CU-321The CU-321 has a Full-Speed USB 1.1-capable port (Series B receptacle).CU-311The CU-311 has an IEEE802.3-compliant Ethernet interface port (10Base-T).Ethernet Interface Port (RJ45 jack) on the CU-311Pin No. Signal Functions1 TD+ Send data2 TD- Send data3 RD+ Receive data4 N.C. No connection5 N.C. No connection6 RD- Receive data7 N.C. No connection8 N.C. No connection
