The second item in your linked web page is:
HP Pavilion Desktop PCs - Motherboard Specifications, ASUS A7V-VM (Mocha)
A VIA chip board which uses 133 MHz SDRAM. I'm pretty sure: that system is no longer being offered for sale.
The search feature didn't have a way to restrict the results to "only current motherboard", I assumed any reasonably intelligent person could see for themselves that the list included past and present ASUS boards.
By contrast, ALL 10 particular ASUS-made boards to which I linked are modern Socket AM2 and LGA775 boards supporting current generation processors, DDR2, and PCI Express. All four of the ASUS LGA775 boards I linked to support Conroe up to 1066MHz bus, one of which supports Kentsfield quad-core.
The Foxconn-made Spruce is based on the dated i865G+ICH5, supports AGP, DDR, and Pentium D up to 800MHz (no Conroe). I seriously doubt the Spruce is even still used in new models (AGP??). I left out another six or so ASUS LGA775 boards based on i945+ICH7 that supported PCI Epxress, DDR2, and the entire LGA775 line except Conroe or higher CPU.
I'm aware that Foxconn is a huge first tier motherboard manufacturer like ASUS and ECS. I have nothing against Foxconn, your claim that Foxconn makes all (or even most) of HP's boards is provably wrong.