The mobo is an Asus A7400-MX. I don't know what the 'UAYZ' stuff is though. Is this in a Dell, HP/Compaq, or something?
ASUS site is down for database synch or something. A site I found Googling it says this:
ASUS A7400MX: Motherboard supports AMD Athlon XP/Sempron up to 3200+ with FSB speeds of 200/266/333/400 MHz, Chipset VIA® VT8237, Dual bus Master IDE Ultra DMA 33/66/100/133, (2) DDR sockets up to 2 GB, (3) PCI , (1) 8x AGP, (4) USB, PS/2 Keyboard and Mouse Connector, USB 2.0 controller, onboard RealTek ALC655 Audio Sound, S3 Graphics UniChrome w/ up to 64MB shared memory.
Apparently it is a VIA KM400A based mobo. I don't know if that handles the mobile chips or not.