MODULES MUST BE ORDERED AND INSTALLED IN PAIRS for Dual Channel mode.
This system is configurable and can ship with either DDR2-533 (KTD-DM8400A/xx) or DDR2-667 (KTD-DM8400B/xx). When mixing DDR2-533 and DDR2-667 modules, the system will default DDR2-533 speed.
If 4GB is installed, the recognized memory may be reduced to 3.5GB or less (depending on system configuration and memory allocation).