As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED MAU 3A FAIL IN FLIGHT ALONG WITH VARIOUS OTHER FAULTS, AND EICAS MSGS. CREW DIVERTED TO PIT AND PERFORMED AN EMERGENCY LANDING WITH EMERGENCY EQUIPMENT VEHICLES DISPATCHED, LANDED WITHOUT INCIDENT. MAINTENANCE WAS DISPATCHED TO THE A/C TO TROUBLESHOOT AND FOUND THE MAU3 NIC PROC 5 TO BE AT FAULT. MAINTENANCE REMOVED AND REPLACED MAU3 NIC PROC 5 PER EMB AMM AND A/C WAS RELEASED BACK INTO SERVICE.