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  Home > Chassis Division > Products > Tower Case > Mini-itx > S-21

Compact Stylish Mini-ITX Enclosure
  • 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
  • Accommodate either 2x 2.5" or 1x 3.5" HDD

Product Introduction
The new S-21 series offers both extreme performance & high capacity, The S-21series proves that it is possible to build an enclosure for entertainment or industrial field. The aluminum front panel is crafted to achieve a generous feeling of substance by minimizing gaps and holes. Everything is either covered or hidden to make sure the look is clean. The S-21 is compatible with the Next Generation Cooling Performance and full range of Mini-ITX motherboards (17cmx17cm).

Compact 15-inch & Under

Model NumberS-21
RoHS Compliance VersionYes
Form factorDesktop U
Standard Drive Bays 2.5" Drive (internal): 2
IndicatorsPower, HDD
SwitchesPower, Reset
Expansion Slots1 (full height, riser card required)
Material of Front BezelAluminum
Material of Main ChassisCold-rolled Steel
Color of Front BezelBlack
Color of Main ChassisBlack
Front Connector2x USB 2.0
Motherboard Size6.7 x 6.7 (mini-ITX)
Optional Fan:1x80mm
Dimensions (WxHxD)8.82" x 3.50" x 8.48"
224.0 mm x 88.9 mm x 215.4 mm
Notes- for PCI riser, use DD-711R-C5-02.
- for PCIe x16 riser, use DD-766R-C5-02.
- 3.5" HDD can't be mounted when an add-on card is in place.
- optional 80mm case fan needs to be 15mm thick or less.


There are no FAQ entries for this model.

Optional Accessories

Model #Description
DD-S21-VESAVESA Mount Bracket for S-21 Chassis
DD-S21-WMWall Mount Bracket for S-21 Chassis
DD-711R-C5-02PCI to PCI Reversed Riser Card with 5cm Ribbon Cable
DD-766R-C5-02PCIe x16 to PCIe x16 Reversed Riser Card with 5cm Ribbon Cable

Compatible Power Supplies

Model #DescriptionRequired
TC-1U15FX11U 150W Flex Power SupplyBrackets Not Required
TC-1U18FX11U 180W Flex Power SupplyBrackets Not Required
TC-1U22FX81U 220W Flex High Efficiency Power SupplyBrackets Not Required
TC-1U30FX81U 300W Flex High Efficiency Power SupplyBrackets Not Required

Compatible Motherboards

Model #Motherboard SizeCompany Name

There are no compatibility motherboard for this model.

Featured Videos

How to Install SSD's into iStarUSA S-21 Mini-ITX


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Product specifications subject to change without notice. Pictures and drawings may include optional components.