Inside the GlacialTech Altair A380, the motherboard standoffs are pre-installed but you'll need some tools to get additional peripherals installed onto the motherboard.

 If you choose to install a larger ATX motherboard it will still fit but you'll find the space will become a little cramped, fortunately GlacialTech had the foresight to make sure there's enough clearance along the top with the 5.25" drive rack.

Thumbscrews hold each of the two drive bays in position. The Glacialtech 380 Altair case holds one 5.25" optical drive, and up to two 3.5" hard drives.

The 5.25" bay is located above the media card reader and front panel USB/audio ports.

The interior drive bay can hold two 3.5" hard drives - it would have been nice if there were rubber pads to insulate the drive vibration and reduce the overall system noise. HTPC builders obsessed with complete silence will spring for solid state drives anyway.

These expansion bays are parallel to the motherboard, so a PCI-riser (not included) is required to make use of them.

The GlacialTech Altair A380 requires a PCI riser to install peripherals and really should have included one with the case. Finding one in the retail market can be quite difficult and while most MicroATX motherboards have everything you'd need, sometimes you still want to expand.