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iStarUSA Inc. > 
Item#: N82E16811165491

iStarUSA S21-15F2 Black Aluminum / Steel Tower Case Compact Stylish Mini-ITX Enclosure 150W Flex ATX

  • 150W Flex ATX
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Learn more about the iStarUSA Inc. S21-15F2




Chassis Type
Tower Case
Case Material
Aluminum / Steel
Motherboard Compatibility
6.7 x 6.7 (mini-ITX)
Power Supply
150W Flex ATX


Expansion Slots
1 Full Height slot, riser card required (not included) - consult manufacture for riser card inquiries

Front Ports

Front Ports
2 x USB 2.0

Physical Spec

8.90" x 3.50" x 8.30"


Drive Bay: 2 x 2.5" internal

Indicators: Power, HDD

Switches: Power, Reset

Smooth Aluminum Front Panel with Contemporary Touch

Next Generation Cooling Performance

Outstanding Potential for Silent Operation

Conveniently Located Front I/O Ports

Strategically Placed Side Ventilation Aid in Cooling.

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the iStarUSA Inc. S21-15F2

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  • Robert B.
  • 5/29/2013 7:40:10 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year

1 out of 5 eggsYou will need ear protection

Pros: NONE


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  • Mark T.
  • 4/12/2013 5:05:06 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsNice Case, Noisy Power Supply

Pros: Nice little case. Don't need an external power supply. Most cases this size need one.

Cons: Power supply is very loud! I've bought two of these. Both had the same issue. Loud enough to make it almost unusable.

Other Thoughts: If the power supplies were quieter, I would give this 5 stars.

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  • Ken H.
  • 10/25/2012 5:58:31 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsFor the right application, great case

Pros: This case is great for building a very small system - it takes a mini-ITX MB and either two 2.5" or one 3.5" drive. If you are concerned about air-flow the case has fan mounts for a front-mounted fan (size unknown) and/or side-mounted fan (again, size unknown). The side-mounted fan will intrude over the add-in card slot.

Cons: This case was made for mini-ITX MBs, but there is no included riser to use the add-in slot. If you check the manufacturer's product page, they offer a riser, but I didn't have a need for one.

The drives mount on the top of the case, on a mounting plate. If you install two 2.5" drives you may obscure one of the four mounting plate screws. I only installed one 2.5" drive, but had to move it when one of the four screws was blocked. It probably would have been fine to only use three screws to hold the mounting plate, but since I was only installing one drive I just moved it.

The MB I used had a fairly low-profile CPU cooling solution (fan/heatsink), but a more conventional cooler (like, say, an Intel stock CPU cooler) would interfere with a 3.5" drive.

Other Thoughts: I coupled this with a Biostar A68I-350 MB to create a test Windows 8 box which didn't require any add-in cards or optical drive, so the "cons" didn't impact me. I wish the cables on the included power supply were a bit shorter, but there is sufficient room to tuck away unneeded cables.

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Home > 
Computer Hardware > 
Servers & Workstations > 
Server Chassis > 
iStarUSA Inc. > 
Item#: N82E16811165491
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