Asus

ASUS A21/BLK// A21 Case A21/BLK//

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SKU:
20597635
MPN:
a21-blk--
Availability:
Usually ships the same or next business day.
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Calculated at Checkout
Stock Update:
03/14/2026 09:09:57 PM PST
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$79.59
Stock Update:
03/14/2026 09:09:57 PM PST

Description



This item is brand-new, factory sealed.

The ASUS A21 micro-ATX case offers support for 360 mm radiators, and 380 mm graphics card, with two color options and clean cable management.

  • Broad Compatibility:A21 supports up to 360 mm radiators, graphics cards up to 380 mm in length and CPU air coolers up to 165 mm in height.
  • Capable Cooling:The front-panel mesh is 40% porous to maximize the balance of airflow, dust filtering and RGB visibility.
  • Ample cable management:The A21 provides a compartment behind the motherboard that is 33 mm wide to keep your wiring tucked away and tidy.


Specs

Physical Characteristics
Product Material
  • Mesh
  • Steel
  • Tempered Glass
  • Plastic
Form FactorMid-tower
Weight (Approximate)16.09 lb
Cooler TypeLiquid Cooler
Product ColorBlack
Height16.9"
Color FamilyBlack
Maximum GPU Length14.96"
Maximum PSU Length8.27"
Width8.7"
Depth18.3"
Maximum CPU Cooler Height6.50"
I/O Expansions
Total Number of Expansion Slots5
Interfaces/Ports
MicrophoneYes
Total Number of Audio Out Ports1
USB Port Details2 x USB 3.2 Gen 1
Front Audio InYes
Front Audio OutYes
Front USBYes
Total Number of Audio In Ports1
Bays
Number of Internal 2.5" Bays1
Number of Internal 2.5"/3.5" Bays2
General Information
Brand NameAsus
Manufacturer Website Addresshttp://usa.asus.com
Marketing InformationThe ASUS A21 micro-ATX case offers support for 360 mm radiators, and 380 mm graphics card, with two color options and clean cable management.
Broad Compatibility:
A21 supports up to 360 mm radiators, graphics cards up to 380 mm in length and CPU air coolers up to 165 mm in height.
Capable Cooling:
The front-panel mesh is 40% porous to maximize the balance of airflow, dust filtering and RGB visibility.
Ample cable management:
The A21 provides a compartment behind the motherboard that is 33 mm wide to keep your wiring tucked away and tidy.
Product TypeComputer Case
Product NameA21 Case
ManufacturerASUS Computer International
Manufacturer Part NumberA21/BLK
Product ModelASUS A21 Case
Technical Information
Motherboard Supported
  • Micro ATX
  • Mini ITX
Number of Fans Supported7
Features
  • Cable Management
  • Dust Filter
Window PanelYes
Fan Size Supported
  • 4.72"
  • 5.51"

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Warranty Information

All Items are Brand New, Factory Sealed and come with a standard warranty. [Read our policies]
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ASUS A21/BLK// A21 Case A21/BLK//
$79.59