The board should fit your acer chasis, but it has only 2 ddr2 slots if that's all you need. The other 2 ram slots are for ddr3. Also, you may need a new windows coa if you are still using the operating system that came with your acer. On most oem systems, the windows installation only works with the original motherboard. The original board has an nvidia chipset; the g41 is an Intel chipset.