The HP Motherboard Part Number for the just released HP TouchSmart tx2 Series is 504466-001. The motherboard comes with “integrated graphics, multiple USB ports - No processor, no memory” according to Hewlett-Packard.
HP Part # 504466-001 is used and compatible only with the HP TouchSmart tx2 Series as of now. Here are some models of the tx2 series - FR171AV NB220UA NB220UAR NB221UA NB221UAR NB223UA NB223UAR NB224UA NB224UAR NB225UA NB225UAR
As always, please feel free to contact me if you have any questions regarding finding the right motherboard. I would be more than happy to assist you the best I can.
HP Touchsmart TX2 TX2Z * AMD Laptop Motherboard ** 504466-001 **
Sale Price: $71.60 on eBay.com