My mother board is the Pegatron 2a84h and the memory specs are: 4 * 240-pin DDR2 DIMM slots Supports Dual Channel DDR2 800 MHz non-ECC , un-buffered memory (Max 4GB). When it says Maximum 4gb, does that mean the maximum RAM I can have is 4gbs, or does it mean maximum of 4gbs per stick?