Crucial® Memory Advisor results for the IBM ThinkPad A21m Series (Type 2633) Laptop/Notebook.

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device type: notebook

Your ThinkPad A21m Series (Type 2633) System Specs

System specs as shipped by the manufacturer.
Scan your system to view your specific system configuration.

Memory:

SDRAM, PC133

Memory Type: SDRAM, PC133, SDRAM (non-ECC)
Maximum Memory: 512MB
Slots: 1

ThinkPad A20 and A21 contain two memory sockets, one of which can be upgraded by the user. To upgrade the standard memory, extensive disassembly may be required and should be taken to an authorized service center to upgrade. Each socket can use a 256MB.

How much memory your Windows OS will recognize depends on which version of Windows you are running. 32-bit versions of Windows will see (and utilize) only 3GB or 3.5GB. To utilize more memory, install a 64-bit version of your OS. More information about OS memory maximums can be found here.

Memory or DRAM is the "working" memory of the computer. It's used to store data for programs (sequences of instructions) on a temporary basis.

video - installing memory

Guaranteed-compatible upgrades for your IBM ThinkPad A21m Series (Type 2633)

Computer Memory