NEC Express5800 Series EXP320B - Manual (Page 333)

System Upgrade 8-21
DIMM slot A1
DIMM slot B1
DIMM slot A2
DIMM slot B2
DIMM slot A3
DIMM slot B3
Motherboard of the CPU/IO module
Precautions
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 the same performance.
„ DIMMs should be installed in sockets from the lowest socket number to the highest socket
number.