Hello. The GX 280 has a silm case which has 250w PSU, 2.4Ghz cpu, 2G ram and 250G hard. I buy a tower ATX case to swap the silm case with 500w PSU. I tried but M/B doesn't fit for ATX case. The M/B doesn't have the power connector to switch. It looks like to need a lot of modification. Anyone try to replace the case with ths model? Thanks.