iStarUSA Inc. D-313SE-MATX 3U Rackmount Server Chassis

Compact 3U rack chassis for microATX builds

The iStarUSA D-313SE-MATX is a 3U rackmount server chassis built from zinc-coated steel with an aluminum front bezel and handles. It accepts microATX and mini-ITX motherboards up to 9.6" x 9.6" and provides four full-height expansion slots for add-in cards. Two front USB 2.0 ports and power or reset switches are included for direct access.

Suits space-limited racks needing legacy bays

This chassis fits builders who need a short-depth 3U enclosure with two external 5.25" bays and one external 3.5" bay for optical drives or removable media. It also offers four internal 3.5" bays for storage arrays. Buyers who require ATX or larger motherboard support, or who need more than four expansion slots, should look at a different form factor.

Four full-height slots up to 165mm deep

The expansion area accommodates cards up to 165mm long when internal hard drives are installed, which determines whether a specific GPU, RAID controller or NIC will physically fit. Cooling options include front mounts for 120mm and 80mm fans plus two rear 60mm positions, but the slot depth limit remains the decisive constraint for card selection.