System Upgrade
CPU module board
Note the following to install or replace DIMM.
The DIMMs with the same number are linked among the groups. When a DIMM is added to one group, another identical DIMM should be installed to the socket with the same number in another group. This rule is applied to the case of removal.
The linked DIMMs should be of the same product with same performance. DIMMs should be installed in sockets, starting from the lowest socket number.