No problem, Most makers have gotten away from using major parts that are proprietary for a couple reasons, It cost them more money tp have the parts special made and end users tend to complaine now that PC's are common and more and more end users are upgrading, modifying, overclocking...etc.
You do see some annoying things though... I ended up with a pc awhile back...think it was a dell but I'm not sure.......had a top of the line asus board in it..model kv7t or some such thing, reviews on it were awsome because it was so overclock friendly and it was rock stable.... however dell had replaced the originall bios and had removed all the jumpers from the board.
Anyway more on topic these are normal IBM mobo they are small form factor atx's Intel Coppermine Pentium III 933MHz (256KB), 128MB, 10GB IDE HDD, Intel 810e, 48X CD-ROM.
They are nice machines with very little use on them.... They came from a medical transcription company and were just used as remote view stations to be able to log into the digital voice recording systems to do maitanience and the such..... 90% of the time they just sat ideal doing nothing in a "cold room".