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Black steel micro-ATX case with eight front hot-swap drive bays and dual rear fans

Silverstone

Silverstone SST-CS381B PC case

SKU CH-5YYP-YAC0H MPN SST-CS381B

Micro ATX or Mini-ITX case with eight hot-swap 3.5-inch and 2.5-inch SAS or SATA bays, four internal 2.5-inch slots, two pre-installed rear 120mm fans and rear SFX or SFX-L PSU support

  • Max graphics card lengthUp to 10.5 in (266.7 mm), please refer to manual for more de
  • Housing materialSteel / Plastic
  • Power supplySupport SFX / SFX-L (sold separately)
  • Power supply mountingRear
  • Supported motherboard sizesMicro-ATX / Mini-ITX / Mini-DTX
  • Side panel typeWithout Side Window
  • Eight hot-swap bays accept 3.5" and 2.5" SAS or SATA drives
  • Four internal 2.5" bays fit 5mm to 15mm thick drives
  • Two pre-installed 120mm rear fans run at 1300rpm with 28dBA noise
  • Rear radiator support up to 240mm enables liquid cooling
  • Front panel provides two USB 3.1 Gen 1 ports and audio

Compact storage server chassis

The Silverstone SST-CS381B is a Micro-ATX and Mini-ITX case built for dense storage workloads. Its steel and plastic frame fits eight hot-swap bays in a short-depth layout suited to home labs or small business servers.

Eight hot-swap SAS/SATA bays

The defining feature is the front-mounted cage that accepts eight 3.5-inch or 2.5-inch drives with SAS or SATA interfaces. Drives can be swapped without tools or system downtime, a requirement for RAID arrays or ZFS pools.

Capacity headroom and limits

Four internal 2.5-inch slots add SSD space for boot or cache duties. A 59-millimetre CPU cooler ceiling and 266.7-millimetre GPU limit restrict high-performance parts, while the SFX power supply mount caps length at 200 millimetres.

How it compares

Measured against everything we stock in Tower & Desktop PC Cases, at today’s prices. Recalculated every night.

Price $295.99
Pricier than about 83% of the 1,468 comparable items (median $100.99).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameSilverStone
Product lineCase Storage Series CS381
Model nameSST-CS381B
Product typeMicro ATX / Mini-ITX
Product colorBlack
Storage
2.5-inch internal bays4 × 2.5 in (5 mm - 15 mm) (2 on left racks)
Hot-swappable bays8 × 3.5 in / 2.5 in SAS / SATA external hot-swapping
Ports & slots
Expansion card slots4
Front panel ports2 x USB 3.1 Gen 1 / Audio
Power
Power supply includedNo
Power supplySupport SFX / SFX-L (sold separately)
Size & build
Max graphics card lengthUp to 10.5 in (266.7 mm), please refer to manual for more details
Housing materialSteel / Plastic
Power supply mountingRear
Side panel typeWithout Side Window
Fan mounting optionsRear: 2 × 120 mm 1,300 rpm 28 dBA dual ball bearing fan Life time 70000hr (Pre-installed)
Side: 2 × 120 mm or 3 × 80 mm fan slot (optional)
Product dimensions8.86 in × 15.75 in × 12.44 in
Product weight15.43 lb (7 kg)
Shipping weight8.17 kg
Package size508 × 432 × 337 mm
Compatibility
Supported motherboard sizesMicro-ATX / Mini-ITX / Mini-DTX
Radiator supportRear - Up to 120 mm / Rear - Up to 240 mm
CPU cooler height limit59 mm*
*If CPU cooler used has top-down airflow direction, please make sure there is at least 10 mm of clearance above the fan for sufficient air intake.
PSU length limit200 mm

Questions about this item

How much clearance does the 59 mm CPU cooler limit leave for a top-down cooler?

The manual requires at least 10 mm of space above the fan, so a top-down cooler must fit within 59 mm total height and still leave that gap for airflow.

What does the USB 3.1 Gen 1 front port actually deliver in practice?

The two front ports run at 5 Gbps USB 3.1 Gen 1 speed and also provide a combined audio jack for headset use.

What drive heights fit in the four internal 2.5" bays?

The bays accept 2.5" drives from 5 mm to 15 mm thick, with two of the slots located on the left-side racks.

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