Mobo: http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&docname=c01324212#N153
RAM: http://www.amazon.de/Original-PC2-6400U-unbuffered-M378T2953QZS-CF7-Mainboards/dp/B003ZP4VC0/ref=sr_1_2?s=computers&ie=UTF8&qid=1405901737&sr=1-2&keywords=2+gb+ddr2+PC2-6400+%28800+MHz%29
OR: http://www.ebay.com/itm/2GB-2X1GB-PC2-6400-DDR2-800-Memory-For-Dell-HP-SONY-AMD-INTEL-ASUS-IBM-/111397420346?pt=US_Memory_RAM_&hash=item19efcdbd3a
RAM: http://www.amazon.de/Original-PC2-6400U-unbuffered-M378T2953QZS-CF7-Mainboards/dp/B003ZP4VC0/ref=sr_1_2?s=computers&ie=UTF8&qid=1405901737&sr=1-2&keywords=2+gb+ddr2+PC2-6400+%28800+MHz%29
OR: http://www.ebay.com/itm/2GB-2X1GB-PC2-6400-DDR2-800-Memory-For-Dell-HP-SONY-AMD-INTEL-ASUS-IBM-/111397420346?pt=US_Memory_RAM_&hash=item19efcdbd3a