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Black and silver 4U rackmount server chassis, open-box condition

Rosewill Open box

Rosewill RSV-R4000U-SK 4U Server Chassis 8×3.5" 3×5.25

SKU CH-AJ94-EBZW1 MPN RSV-R4000U-SK

A 4U rackmount server chassis holding eight 3.5" drives and three 5.25" bays, with included PWM fans and front USB 3.0 ports

  • Form factor4U
  • Max graphics card length270 mm
  • Chassis styleRackmount
  • Housing materialSGCC
  • Supported motherboard sizesATX / Micro ATX / Mini ITX
  • Power supplySupports ATX power supply
  • High-density storage with eight 3.5" internal bays and three 5.25" external slots
  • Quiet PWM cooling using two Sudokoo SK120 fans rated 500~3000 RPM
  • Flexible motherboard support for ATX, Micro ATX and Mini ITX boards
  • Front-panel monitoring via power, HDD and dual LAN activity LEDs
  • Secure access with built-in lock and two USB 3.0 ports for fast peripheral connection

4U Server Chassis for Storage Builds

The Rosewill RSV-R4000U-SK is a 4U rackmount case built for systems that need dense hard-drive capacity. It fits ATX, Micro-ATX and Mini-ITX motherboards and supports standard ATX power supplies up to 220 mm long. The SGCC steel frame provides a rigid platform for server or workstation deployments.

Eight 3.5-Inch Bays and Sudokoo PWM Fans

Eight internal 3.5-inch bays let you install a large storage array, while three external 5.25-inch slots remain free for optical drives or hot-swap cages. Two included Sudokoo SK120 120 mm PWM fans at the front spin between 500 and 3000 RPM, and two 80 mm rear fans exhaust heat. Front-panel LEDs show power, drive activity and dual LAN status.

Expansion Limits and Cooling Headroom

Seven expansion slots accommodate full-length cards up to 270 mm, though the GPU holder reduces maximum CPU cooler height to 117 mm; removing it raises clearance to 152 mm. Two USB 3.0 ports on the front provide quick peripheral access. A keyed front-panel lock secures the drive bays against unauthorised removal.

How it compares

Measured against everything we stock in Rackmount Server Cases, at today’s prices. Recalculated every night.

Price $145.99
Cheaper than about 78% of the 1,006 comparable items (median $222.49).
Max graphics card length 270 mm
Lower than about 60% of the 36 comparable items (median 275 mm).

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Specifications

Product
Brand nameRosewill
Model nameRSV-R4000U-SK
Product colorBlack / Silver
Storage
5.25-inch external bays3
3.5-inch internal bays8
Ports & slots
Expansion card slots7
Front panel ports2 x USB 3.0
Power
Power supplySupports ATX power supply
Size & build
Form factor4U
Max graphics card length270 mm
Chassis styleRackmount
Housing materialSGCC
Fan mounting optionsFront: 2 × 120 mm fans (2 × 120 mm PWM fan included)
Rear: 2 × 80 mm fans (2 × 80 mm fan included)
Shipping weight15.06 kg
Package size681 × 579 × 279 mm
Compatibility
Supported motherboard sizesATX / Micro ATX / Mini ITX
CPU cooler height limitWith GPU holder: 117 mm / Without GPU holder: 152 mm
PSU length limit220 mm
More details
Status lightsPower status, HDD activity, 2 x Lan activity

Questions about this item

How often should the two included Sudokoo SK120 PWM front fans be cleaned or replaced?

The Sudokoo SK120 PWM fans spin at 500–3000 RPM; clean dust from their blades and filters every three to six months and replace a fan only if bearing noise appears or airflow drops.

Which limit appears first when the chassis runs continuously with eight drives and a full-length GPU?

The 270 mm maximum GPU length and 117 mm CPU cooler clearance with the GPU holder installed are the physical constraints reached before thermal limits.

What noise and heat levels should be expected from the two 120 mm front and two 80 mm rear fans during all-day operation?

Front fans run at 500–3000 RPM PWM speeds while rear 80 mm fans spin constantly; together they move high airflow with low noise under typical server loads.

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