The failing function code indicates a failure in 4-Port 10/100/1000 Base-TX PCI Express Adapter. If you replace a 4-Port 10/100/1000 Base-TX PCI Express Adapter and the problem is not resolved, replace the I/O backplane.
Note: Use the location code to identify the failing unit or enclosure.
Use the following table to determine the part number for the field replaceable unit (FRU):
| CCIN or FFC | Type and model | Part number | Description | Location code |
| 256E | Any | 10N8556 | 4-Port 10/100/1000 Base-TX PCI Express Adapter | Un-Px |
| 256E | 8204-E8A | 10N9369 | System backplane | Un-P1 |
| 256E | 9117-MMA | 42R7352 | I/O backplane | Un-P1 |