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these are the specs:
Durable anodized aluminum finish
Clear side window
Front ports: 2x audio, 2x USB
One low-speed 120mm fan (rear)
One low-speed 120mm blue LED fan (front)
Fan Specs:
- RPM: 1200
- CFM: 38.94
-dB(A): 24.85
9 Drive Bays:
- External: 3 x 5.25", 2x 3.5"
- Internal: 4 x 3.5" individual drive trays with rubber grommets to absorb vibration
Motherboards: up to Standard ATX
Compatible with any ATX12V power supply
Free case-carrying strap

What does atx mean?

what upec says is true. more specifically, ATX is what is known as a form factor. all ATX motherboards have mounting holes in pre-determined places, as well as a standard plug interface (that is to say, they all look the same when they stick out the back of your case). unless you want a really super small computer, you want an ATX motherboard. you also should be able to spot the ATX form factor on most standard computer cases (all ATX cases can hold ATX motherboards...get it?).
once again, the ATX form factor is the standard. plan on buying ATX gear.

Gigabyte 7VRXP mobo; AMD Athlon 1400+; 512 MB PC-133 memory; Radeon 8500 64 MB; Lite-on CD-RW 32x12x40; LG DVD-ROM; TB Santa Cruz; Videomate Gold+ TV Tuner; NEC FE700+ monitor