Dell Optiplex GX620 V2 Minitower Motherboard-HH807 Compatible Part#: F8098, 0F8098, X9682, 0X9682, HJ780, 0HJ780, MD525, CJ334, 0CJ334 Compatible Model: DELL OPTIPLEX GX620 Maximum Memory: Dual Channel DIMM Support for up to 4 GB of memory Socket: LGA775 Chipset: Intel 945G