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Guaranteed compatible upgrades for:

IBM/Lenovo ThinkCentre M55p 8800, 8802, 8804-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

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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
Hynix 2GB (1x 2GB) DDR2-800 PC2-6400 1.8V DR x8 240-pin UDIMM RAM Module

Hynix 2GB (1x 2GB) DDR2-800 PC2-6400 1.8V DR x8 240-pin UDIMM RAM Module
System Specifications
Maximum Memory:
  • 8GB
Expansion:
  • 4 Sockets
Standard Memory:
  • 256MB (Removable) or
  • 512MB (Removable) or
  • 1GB (Removable)
CPU/Chipset:
  • Intel Pentium 4 Intel Q965
  • Intel Core 2 Duo Intel Q965
Bus Architecture:
  • PCI; PCI Express
Mfr's System P/N's:
  • 8800-xxx; 8802-xxx; 8804-xxx
Upgrade Path:
  • Virtually any configuration up to 4GB can be reached using any combination of 512MB, 1GB and 2GB modules.