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Guaranteed compatible upgrades for:

IBM/Lenovo ThinkCentre A51 8122, 8123, 8124, 8129

WD Black 4TB 7200RPM 128MB Cache SATA 6.0Gb/s 3.5" Desktop Internal Hard Drive

WD Black 4TB 7200RPM 128MB Cache SATA 6.0Gb/s 3.5" Desktop Internal Hard Drive
WD Blue 4TB 5400RPM 64MB Cache SATA 6.0Gb/s 3.5" Desktop Internal Hard Drive

WD Blue 4TB 5400RPM 64MB Cache SATA 6.0Gb/s 3.5" Desktop Internal Hard Drive

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WD Blue 3TB 5400RPM 64MB Cache SATA 6.0Gb/s 3.5" Desktop Internal Hard Drive

WD Blue 3TB 5400RPM 64MB Cache SATA 6.0Gb/s 3.5" Desktop Internal Hard Drive
WD Blue 2TB 5400RPM 256MB Cache SATA 6.0Gb/s 3.5" Desktop Internal Hard Drive

WD Blue 2TB 5400RPM 256MB Cache SATA 6.0Gb/s 3.5" Desktop Internal Hard Drive
WD Blue 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Desktop Internal Hard Drive

WD Blue 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Desktop Internal Hard Drive
System Specifications
Maximum Memory:
  • 3GB
Expansion:
  • 4 Sockets
Standard Memory:
  • 256MB (Removable) or
  • 512MB (Removable)
CPU/Chipset:
  • Intel Pentium 4 Intel 915G
  • Intel Pentium 4 Intel 915GV
  • Intel Celeron D Intel 915G
  • Intel Celeron D Intel 915GV
Bus Architecture:
  • PCI; PCI Express
Mfr's System P/N's:
  • 8122-xxx; 8123-xxx; 8124-xxx; 8129-xxx
Upgrade Path:
  • Virtually any configuration up to 3GB can be reached using any combination of 1GB modules.