Oracle Exadata X10M Service Manual page 135

Chapter 12
Install the Motherboard Assembly
Note:
IMPORTANT: After replacing the motherboard, you might need to
manually program the product serial number (PSN) into the new
motherboard. This is necessary because the motherboard is a
secondary member of a select group (or quorum) of components used
for maintaining the PSN for service entitlement. If you replace more than
one of the quorum members during a service procedure, a secondary
quorum member might need to be programmed with the PSN. See FRU
Key Identity Properties (KIP) Automated Update.
12-16