Lenovo/IBM ThinkCentre M55e 9301-21A Memory
Maximum Memory: 4gb
Base Memory: 512mb (Removable)
Upgrade Sockets: 2 (2 banks of 1)
MODULES MAY BE INSTALLED ONE AT A TIME; however, they must be added in like pairs to take advantage of dual channel mode. 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.
512Mb Part Number: 40J8872, 30R5121, 73P3213, 40J8869, 30R5125, 73P4983
1Gb Part Number: 40J8873, 30R5122, 73P3215, 40J8870, 30R5126, 73P4984
2Gb Part Number: 40J8874, 30R5123, 73P4973, 40T4064, 30R5127, 73P4985
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