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Asus

Asus A21 Case

$69.99
$53.47 SAVE $16.52
None availableas of 09/03/2026

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Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

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Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

Overview

View user manual

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.


Technical specifications

General Information

Manufacturer ASUS Computer International
Manufacturer Part Number A21WHTA21/WHT
Manufacturer Website Address http://usa.asus.com
Brand Name Asus
Product Model ASUS A21 Case
Product Name A21 Case
Product Type Computer Case

Technical Information

Motherboard Supported Mini ITXMicro ATX
Number of Fans Supported 7
Fan Size Supported 4.72"5.51"
Features Cable ManagementDust Filter
Window Panel Yes

Bays

Number of Internal 2.5" Bays 1
Number of Internal 2.5" / 3.5" Bays 2

I/O Expansions

Total Number of Expansion Slots 5

Interfaces/Ports

Total Number of USB Ports 2
Front USB Yes
USB Port Details 2 x USB 3.2 Gen 1
Total Number of Audio In Ports 1
Front Audio In Yes
Total Number of Audio Out Ports 1
Front Audio Out Yes
Microphone Yes

Physical Characteristics

Color Family White
Product Color White
Product Material MeshTempered GlassSteelPlastic
Cooler Type Liquid Cooler
Form Factor Mid-tower
Maximum CPU Cooler Height 6.50"
Maximum PSU Length 8.27"
Height 16.9"
Maximum GPU Length 14.96"
Width 8.7"
Depth 18.3"
Weight (Approximate) 16.09 lb

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Questions about shipping or returns? Chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.