540-7952 Motherboard, RoHS:YL 541-2297 Motherboard, RoHS:YL X4287A [S] 541-3419 [C] 16GB (2 × 8GB DDR2-667 Registered ECC dual-rank DIMMs) n/a 371-4387 8GB DDR2-667 dual-rank Memory DIMM, RoHS:Y n/a X6320A [S] 540-7598 [C] 2GB (2 × 1GB) Memory FRU, RoHS:Y n/a 371-3845 1 GB Registered ECC DDR2-667 DIMM, RoHS:Y n/a X6321A [S] 540-7599 [C] 4GB (2 × 2GB) Memory FRU, RoHS:Y n/a 371-3846 2GB Registered ECC DDR2-667 DIMM, RoHS:Y n/a X6321A-C [S] 540-7829 [C] 4GB (2 × 2GB) Memory FRU n/a 371-4160 2GB Registered ECC Single Rank DDR2-667 DIMM, RoHS:Y n/a X6322A [S] 540-7600 [C] 8GB (2 × 4GB) Memory FRU, RoHS:Y n/a 371-3847 4GB Registered ECC DDR2-667 DIMM, RoHS:Y n/a 13728762797