The 3R System R490 conforms to the ATX form factor and so can accommodate motherboards with form factors ATX and Micro-ATX.
Its dimensions (LxWxH) are 450mm x 185mm x 420mm.
|Motherboard Form Factors||Maximum Graphics Card Length||350mm|
|Material||Not sure||Front Fans||1|
|Color||Black||Front Fans Size||120mm|
|Expansion Slots||7||Rear Fans||1|
|5.25″ Drive Bays||3||Rear Fans Size||120mm|
|3.5″ Drive Bays||6||IO Display Panel||yes|
|2.5" Drive Bays||0||Front USB 2.0 Slots||2|
|Tool-less Rails||no||Front USB 3.0 Slots||0|
The 3R System R490 has a the ATX form factor. ATX is the most ubiquitous of case standards, providing the largest array of compatible hardware on the market. Using the ATX standard, the case can house motherboards and power supplies with form factors ATX and Micro-ATX. The dimensions of the case itself (LxWxH) are 450mm x 185mm x 420mm.
The 3R System R490 has seven expansion slots, so there is plenty of room for extra components, which may be a deciding factor when planning on the longevity and build type of a PC system. The case has three 5.25" drive bays, which is enough to house an optical drive and a couple of hard drives, while still having space for plenty more HDDs with the six 3.5" drive bays that are also available. There are no 2.5" drive bays, though, so any SSD or laptop-sized HDD installation would require an adapter.