I have a R610 with bad POE port. The POE port can powre on unit. But cannot transfer data. The port show no MAC address on the SSH check status command. Another one port is working condition. Unit can bu used on unleashed 200.7. Both port cnannot work when you upgrade the version newer than 200.7. Both ports are no function when I plug the cable. It's back to working again when you downgrade it to 200.7 or lower version.