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Black 3U rackmount chassis with aluminum front bezel and sliding rails

iStarUSA Inc.

iStarUSA Inc. D-300SEA-BK-RAIL24 3U server rack with 20" rails

SKU CH-WMEZ-5YEVX MPN D-300SEA-BK-RAIL24

A 3U rackmount chassis holding four 5.25″ bays, three 3.5″ drives and an ATX board, supplied with 20″ sliding rails

  • 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 dense server deployments
  • aluminum front bezel with key lock secures internal components
  • 20-inch sliding rails enable smooth rack installation
  • seven expansion slots plus seven drive bays support versatile builds
  • front USB 2.0 ports give quick peripheral access

3U rackmount chassis with sliding rails

The iStarUSA D-300SEA-BK-RAIL24 is a 3U server rack built from 1.2mm SECC zinc-coated steel with an aluminium alloy front bezel. It fits standard 19-inch cabinets and ships with a 20-inch sliding rail kit for quick installation. The unit suits small-business servers, edge appliances or test labs that need a compact, lockable enclosure for ATX or microATX boards.

Single 60 mm fan with expansion brackets

A single 60 mm fan comes fitted as standard, delivering baseline airflow through the chassis. Optional cooling can be expanded to one additional 60 mm and three 80 mm fans when the DD-FANGUARD-8 bracket is added. Front-panel LEDs show power, drive activity, temperature and fan status once the TC-ISF08 sensor board is installed.

Locking bezel, front USB and seven slots

The patented aluminium front panel includes a key lock to prevent unauthorised access to the drive bays and controls. Two USB 2.0 ports on the front provide easy peripheral or media access. Seven expansion slots accommodate full-height cards, while the chassis accepts both 1U and 2U power supplies for flexible deployment.

How it compares

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

Price $141.99
Pricier than about 58% of the 2,764 comparable items (median $106.99).

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Specifications

Product
Brand nameiStarUSA
Model nameD-300SEA-BK-RAIL24
Product typeRack Mount Cabinet
Product colorof Front Bezel: Black
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 weight13.61 kg
Package size686 × 559 × 229 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

How do I mount the 20" sliding rails so the chassis aligns with the 19.00" rack width?

Extend each rail to 20 inches, secure the front and rear brackets to the rack posts, then slide the 19.00" wide chassis in until the front bezel locks flush — the step often missed is tightening the rear rail screws before loading the unit.

Which cooling parts will need replacement first in the D-300SEA-BK-RAIL24?

The standard 60mm fan runs continuously; optional 80mm fans (added with bracket DD-FANGUARD-8) share the same duty cycle, so plan to swap the 60mm unit first and the 80mm set later.

What thermal limit appears first when the 3U chassis runs fully loaded?

A single 60mm fan at 20.80" depth creates the primary airflow bottleneck; adding three 80mm fans with the DD-FANGUARD-8 bracket raises the ceiling before temperatures trigger the alarm LED.

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