ThinkPad T400 (7417, 7420)

System Information

Manufacturer Specifications:

Memory Sockets: 2 slot(s)
Maximum Memory: Supports up to 8GB
Model Id:

Product Notes:

If 4GB is installed, the recognized memory may be reduced to 3.5GB or less (depending on system configuration and memory allocation). To support 4GB+ requires a 64-bit operating system.