Memory; Introduction To Ddr2 Sdram - MSI MS-7058 User Manual

The mainboard provides 2 slots for 184-pin DDR1 DIMM (Double In-Line Memory
Module) modules which supports the memory size up to 2GB.
Introduction to DDR SDRAM
DDR1 SDRAM is similar to conventional SDRAM, but doubles the rate by
transferring data twice per cycle. It uses 2.5 volts, and requires 184-pin DIMM modules.

Memory

Hardware Setup
2-7