RX CRC Errors?

[krakrenterprises]

We have deployed about 15 - 12-250-DC switches recently. We have had a few now with RX CRC errors on port 12 (carrying vlan traffic + power to router). We have attempted to change the cable and also the port on the router with no correction.

We have added another cable from port 10 Netonix to the router and it has no CRC errors now when carrying the same traffic. The only difference between them is that port 12 was also carrying POE, while 10 is not now.

Do we have bad ports on these switches? or something else we should be checking?