The GA-7N400 is a Gigabyte Socket A motherboard based on the nForce2 chipset. I had a few things catch me out as I got it working with linux.

• If you do not have the "front audio" expansion connected ensure that pins 5-6 and 9-10 (either side of the single pin) are jumpered or you will not be able to get any sound out of the line out port.
• Kernel 2.4.21 does not support the IDE controller on the nVidia chipset (well it does, but only in 16-bit PIO mode), 2.4.20 supports the controller properly in 32-bit DMA mode.

Other than that it seems to be a fairly good motherboard. The nForce chipset was a little bit more work to get going under linux that I would have liked (see NForce2Notes, but it was not hassle free to set it up under windows either. I guess you get what you pay for.