| X4910A | 371-4965 [C] | 4GB Registered DDR3-1333 DIMM, 1.35V | n/a |
| X4911A | 371-4966 [C] | 8GB Registered DDR3L-1333/DDR3L-1600 DIMM, 1.35V | n/a |
| X4850A [S] | 371-4898 [C] | 4GB Registered DDR3-1333 DIMM, 1.5V | n/a |
| X4851A [S] | 371-4899 [C] | 8GB Registered DDR3-1066 DIMM, 1.5V | n/a |