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Guaranteed compatible upgrades for:

IBM/Lenovo ThinkCentre M55 8810, 8811, 8814, 8816-xxx

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

Save $27.10
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 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:
  • 8GB
Expansion:
  • 4 Sockets
Standard Memory:
  • 256MB (Removable) or
  • 512MB (Removable) or
  • 1GB (Removable)
Bus Architecture:
  • PCI Express; PCI-X
Mfr's System P/N's:
  • 8810-xxx; 8811-xxx; 8814-xxx; 8816-xxx
Upgrade Path:
  • Virtually any configuration up to 8GB can be reached using any combination of 512MB, 1GB and 2GB modules.