8-18 System UpgradePrecautionsNote the following to install or replace DIMM. The DIMMs with the same number are linked among the groups. When a DIMM is added to onegroup, another identical DIMM should be installed to the socket with the same number inanother 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 socketnumber.DIMM slot A1DIMM slot B1DIMM slot A2DIMM slot B2DIMM slot A3DIMM slot B3Motherboard of the CPU/IO module
