Acer Extensa 5220 Service Manual page 40

Item
Cache controller
Cache size
System Memory
Item
Memory controller
Memory size
DIMM socket number
Supports memory size per socket
Supports maximum memory size
Supports DIMM type
Supports DIMM Speed
Supports DIMM voltage
Supports DIMM package
Memory module combinations
30
Built-in CPU
1MB to 4MB (See CPU type)
Built-in
0MB (no on-board memory)
2 sockets
2048MB
4G for 64bit OS(with two 2GB SODIMM)
DDR 2 Synchronous DRAM
533/677 MHz
1.8V and 0.9V
200-pin soDIMM
You can install memory modules in any combinations as long as
they match the above specifications.
Specification
Specification
Chapter 1