SELX2A1Z [S] 8 × 1GB Memory Module, L 371-1899 [F] 1GB DDR2-533/DDR2-667 1-Rank DIMM, n/a 541-0545 [F] Memory Board, L n/a SELX2B1Z [S] 8 × 2GB Memory Module, L 371-1900 [F] 2GB DDR2-533 / DDR2-667 2-Rank DIMM, n/a 541-0545 [F] Memory Board, L n/a SELX2B2Z [S] 8 × 2GB Memory Module, L 371-4236 [F] 2GB DDR2-667 1-Rank DIMM, n/a 541-0545 [F] Memory Board, L n/a SELX2C1Z [S] 8 × 4GB Memory Module, L 371-1901 [F] 4GB DDR2-667 2-Rank DIMM, n/a 541-0545 [F] Memory Board, L n/a SELX2D1P [S] 8 × 8GB Memory Module 371-4476 [F] 8GB DDR2-667 2-Rank DIMM, n/a 541-0545 [F] Memory Board, L n/a SELX2D1Z [S] 8 × 8GB Memory Module, L 371-4476 [F] 8GB DDR2-667 2-Rank DIMM, n/a 541-0545 [F] Memory Board, L n/a SELX2E1Z [S] 4 × 1GB Memory Module, L 371-1899 [F] 1GB DDR2-533/DDR2-667 1-Rank DIMM, n/a 541-0545 [F] Memory Board, L n/a SELX2EX1Z [S] 4 × 1GB Memory Expansion X-option, L 371-1899 [F] 1GB DDR2-533/DDR2-667 1-Rank DIMM, n/a