Lenovo ThinkPad X220i 4290 Memory

System Memory

Standard Memory: 2 GB
Maximum Memory: 8 GB
Expansion Sockets: 2
Memory Comments: PC3-10600 1333Mhz DDR3 SDRAM SO DIMM 204-pin

System Specifications

Processor: Intel Celeron
Model Comments: Mobile Intel QM67 Express

These memory upgrades are all guaranteed to work with