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Black 3U rackmount chassis with blue aluminium front bezel, 19 by 5.25 by 20.8 inches

iStarUSA Inc.

iStarUSA Inc. D-300SEA-BL-HDD2535 3U server rack

SKU CH-PG40-6MW6S MPN D-300SEA-BL-HDD2535

A 3U rack-mount chassis with a blue aluminium front bezel, seven expansion slots, two front 3.5-inch bays, one internal 3.5-inch bay, four 5.25-inch bays and an included 2.5-to-3.5-inch converter

  • Rack height3U
  • Cooling (optional)1 × 60 mm, 3 × 80 mm (bracket DD-FANGUARD-8 required)
  • Cooling (standard)1 × 60 mm
  • Spec summaryStandard Drive Bays: - 3.5 in Drives: 2–3.5 in Drive (intern
  • Product dimensions19 in × 5.25 in × 20.8 in
  • Product typeRack Mount Cabinet
  • 3U rack height fits standard cabinets
  • Blue aluminium front bezel adds visual identity
  • 2 mm Japanese SECC steel chassis resists flex
  • Seven full-length expansion slots support add-in cards
  • Front USB 2.0 ports give quick external access

Compact 3U rackmount chassis

The iStarUSA D-300SEA-BL-HDD2535 is a 3U server rack with a blue aluminium front bezel and a black 1.2mm SECC zinc-coated steel chassis. It fits standard 19-inch racks and accepts ATX or microATX motherboards up to 12 by 9.6 inches. The unit includes a 2.5-inch to 3.5-inch drive converter for flexible storage.

Upgrade from tower or 2U cases

This chassis replaces tower servers or 2U racks when you need seven full-length expansion slots and room for four 5.25-inch bays plus three 3.5-inch drives. The jump is worth it when hot-swappable storage or RAID via optional BPU backplanes becomes a requirement. Builders who need more than seven slots or deeper motherboard support should look elsewhere.

Straightforward rack installation

Mounting uses standard 19-inch rails and the chassis depth of 20.80 inches fits many cabinets. A single 60mm fan is standard; adding three 80mm fans requires the DD-FANGUARD-8 bracket. Front USB 2.0 ports, power and reset switches, and a key lock are accessible behind the bezel. Temperature and fan indicators need the optional TC-ISF08 sensor board to function.

How it compares

Measured against everything we stock in Rack Cabinets & Shelves, at today’s prices. Recalculated every night.

Price $127.99
Pricier than about 55% of the 2,764 comparable items (median $106.99).

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Specifications

Product
Brand nameiStarUSA
Model nameD-300SEA-BL-HDD2535
Product typeRack Mount Cabinet
Product colorof Front Bezel: Blue
Color of Main Chassis: Black
Size & build
Rack height3U
Main materialof Front Bezel: Aluminum alloy
Material of Handle: SECC Zinc-Coated Steel
Material of Main Chassis: 1.2 mm SECC Zinc-Coated Steel (Japan Made)
Product dimensions19 in × 5.25 in × 20.8 in
Shipping weight13.15 kg
Package size686 × 559 × 254 mm
More details
Cooling (optional)1 × 60 mm, 3 × 80 mm (bracket DD-FANGUARD-8 required)
Cooling (standard)1 × 60 mm

Questions about this item

Will the 19.00-inch wide chassis fit a standard 19-inch rack and what depth clearance does the 20.80-inch body need?

The chassis is exactly 19.00 inches wide for standard 19-inch racks and 20.80 inches deep, so allow at least that much clear depth behind the front mounting rails.

How do I install the optional three 80mm fans and the required DD-FANGUARD-8 bracket?

Mount the DD-FANGUARD-8 bracket into the designated fan area, then screw the three 80mm fans onto the bracket; the single standard 60mm fan fits directly into its rear slot without extra parts.

When should I replace the standard 60mm fan or add the optional 80mm fans for heavier thermal loads?

Replace the 60mm fan if airflow drops or noise rises; add the three 80mm fans with the DD-FANGUARD-8 bracket when component density or ambient temperature pushes the chassis beyond the single fan's capacity.

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