What should I check before buying?

Check GPU length, CPU-cooler height, radiator thickness, PSU length and cable bend room together, not one clearance figure in isolation.

Which motherboards fit?

The verified data lists ATX, micro ATX and Mini-ITX support.

The source summary lists 3 x 120mm side fans and 1 x 120mm rear fan.

No. Availability is refreshed from distributor stock and can change until the order is processed.

Dispatch within 24–48 hours (business days). Transit time is separate.