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Black tower server chassis with four front 3.5-inch hot-swap bays and silver drive handles

iStarUSA Inc.

iStarUSA Inc. S-35-B4SL server chassis 4×3.5" hot-swap mini-ITX

SKU CH-1Z64-SK8KV MPN S-35-B4SL

Tower server chassis holds four hot-swap 3.5″ drives and one 2.5″ bay for mini-ITX builds

  • Chassis TypeTower
  • ColorBlack
  • Case MaterialAluminum / Steel
  • Motherboard CompatibilityMini ITX
  • Hot-Swap Drive Bays4 x 3.5"
  • Internal 2.5" Drive Bays1

Model S-35-B4SL

  • Four hot-swap 3.5" bays maximise storage density
  • Single 120 mm fan delivers targeted airflow
  • Mini-ITX support fits compact server builds
  • Front USB 2.0 ports give quick peripheral access
  • Aluminium and steel construction ensures rigid durability

Compact Storage Tower

The iStarUSA S-35-B4SL is a black tower chassis built around a Mini-ITX motherboard and four hot-swap 3.5" drive bays. It suits home-lab builders or small-office NAS projects that need dense 3.5" storage in a desk-friendly aluminium-and-steel enclosure. A single internal 2.5" bay and one expansion slot complete the internal layout.

Sustained Load Behaviour

One pre-installed 120mm fan provides baseline airflow across the drive cage during long backup or media-serving sessions. The 4 mm aluminium front panel and PVC-laminated construction help dissipate heat from drives running continuously at 6.0 Gb/s SATA or SAS speeds. No additional cooling is included, so sustained write workloads rely on the single fan and natural convection.

Thermals Noise and Power

Front-panel USB 2.0 ports and the power button sit behind the silver hot-swap handles for easy access. The chassis accepts a Flex ATX power supply, letting the builder choose a unit sized for the actual component load rather than a fixed wattage. Dimensions are 8.90" x 8.68" x 12.76", leaving a small footprint on a shelf or desk.

Highlights

  • Four hot-swap 3.5" bays maximise storage density
  • Single 120 mm fan delivers targeted airflow
  • Mini-ITX support fits compact server builds
  • Front USB 2.0 ports give quick peripheral access
  • Aluminium and steel construction ensures rigid durability

Specifications

BrandiStarUSA
ModelS-35-B4SL
Chassis TypeTower
ColorBlack
Case MaterialAluminum / Steel
Motherboard CompatibilityMini ITX
Hot-Swap Drive Bays4 x 3.5"
Internal 2.5" Drive Bays1
Expansion Slots1
Front Ports2 x USB 2.0
120mm Fans1
FeaturesSilver HDD Handle
Sleek Front Panel with Power On Button
4x 3.5" Hotswap Bays
4mm Aluminum Front Panel
Support 6.0Gb/s SATA/SAS HDDs
First PVC Laminate Technical in NAS Chassis
Compatible with Flex Power Supply
Heavy Duty SECC Construction
Support Standard I/O Slot
Support mini-ITX Motherboard
Dimensions8.90" x 8.68" x 12.76"
Shipping weight7.26 kg
Package size325 × 226 × 221 mm

Other versions of this model

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Questions about this item

How loud does the single 120mm fan run during continuous operation?

The chassis includes one 120mm fan; actual noise depends on the specific fan model installed and the system load.

Which power supply form factor is required for the Flex PSU compatibility?

The case supports Flex ATX power supplies, so you must provide a Flex ATX unit with the correct connectors for your mini-ITX board.

Will my existing 6.0Gb/s SATA or SAS 3.5" drives fit the four hot-swap bays?

Yes, the four hot-swap bays accept 3.5" drives using 6.0Gb/s SATA or SAS interfaces.

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