Guaranteed compatible upgrades for:

IBM/Lenovo ThinkCentre M58p 7188, 7220-xxx

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Samsung 870 Evo 4TB 2.5" 7mm SATA III Internal SSD

Samsung 870 Evo 4TB 2.5" 7mm SATA III Internal SSD

Crucial MX500 2TB 2.5" 7mm SATA III Internal SSD (with 7mm to 9.5mm spacer)

Crucial MX500 2TB 2.5" 7mm SATA III Internal SSD (with 7mm to 9.5mm spacer)

Crucial MX500 1TB 2.5" 7mm SATA III Internal SSD (with 7mm to 9.5mm spacer)

Crucial MX500 1TB 2.5" 7mm SATA III Internal SSD (with 7mm to 9.5mm spacer)

Crucial MX500 500GB 2.5" 7mm SATA III Internal SSD (with 7mm to 9.5mm spacer)

Crucial MX500 500GB 2.5" 7mm SATA III Internal SSD (with 7mm to 9.5mm spacer)

Crucial MX500 250GB 2.5" 7mm SATA III Internal SSD

Crucial MX500 250GB 2.5" 7mm SATA III Internal SSD

Hynix 4GB (1x 4GB) DDR3-1333 PC3-10600 1.5V DR x8 240-pin UDIMM RAM Module

Hynix 4GB (1x 4GB) DDR3-1333 PC3-10600 1.5V DR x8 240-pin UDIMM RAM Module

Elpida 2GB (1x 2GB) DDR3-1333 PC3-10600 1.5V DR x8 240-pin UDIMM RAM Module

Elpida 2GB (1x 2GB) DDR3-1333 PC3-10600 1.5V DR x8 240-pin UDIMM RAM Module

System Specifications

Maximum Memory:

16 GB

Expansion:

4 Sockets

Standard Memory:

1 GB (Removable) or
2 GB (Removable)

CPU/Chipset:

Intel Core 2 Duo Intel Q45
Intel Core 2 Quad Intel Q45
Intel Pentium Dual Core Intel Q45

Bus Architecture:

PCI; PCI Express; SSD - SATA 2.5-inch 9.5mm

Mfr's System P/N's:

7188-xxx; 7220-xxx

Upgrade Path:

Virtually any configuration up to 16GB can be reached using any combination of 1, 2, and 4GB modules.

Comments:

If 4GB is installed, the recognized memory may be reduced to 3.5GB or less (depending on system configuration and memory allocation).
Maximum configurations require a 64-bit operating system.
BIOS revision 5CKT698 or later is required to support 2GB Single Rank and 4GB modules.
MODULES MUST BE ORDERED AND INSTALLED IN PAIRS for Dual Channel mode