X7056A 4 GB (4 × 1GB SDRAM DIMMs) 501-7386 1GB SDRAM DIMM, RoHS:YL 501-6109 X7051A 2 GB (4 × 512MB SDRAM DIMMs) 501-7385 512MB SDRAM DIMM, RoHS:YL 501-5030 X7051A-Z 2 GB (4 × 512MB SDRAM DIMMs), RoHS:YL 501-7385 512MB SDRAM DIMM, RoHS:YL 501-5030 X7056A-Z 4 GB (4 × 1GB SDRAM DIMMs), RoHS:YL 501-7386 1GB SDRAM DIMM, RoHS:YL 501-6109 X7058A-Z 8 GB (4 × 2GB SDRAM DIMMs), RoHS:YL 540-6489 2GB SDRAM DIMM Assembly, RoHS:YL 501-6242 2GB SDRAM DIMM, RoHS:YL