ASUS
A21/BLK Asus Case A21 BLK micro-ATX case Tempered Glass Micro 2xUSB 3.2 Gen1 Retail
Mfg Part Number: A21/BLK , Item #: 5037672
Image may not reflect the actual item.
Price: $118.40
Quantity:
More to Come
Last Updated: Oct 05, 2026
No Sales Tax except these states
, PO and Wire.
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.
Main Specification
| General Information | |
| Manufacturer | ASUS Computer International |
| Manufacturer Part Number | A21/BLK |
| 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 | Micro ATX |
| Motherboard Supported | Mini ITX |
| Number of Fans Supported | 7 |
| Fan Size Supported | 5.51" |
| Fan Size Supported | 4.72" |
| Features | Dust Filter |
| Features | Cable Management |
| 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 | |
| USB Port Details | 2 x USB 3.2 Gen 1 |
| Front USB | Yes |
| 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 | Black |
| Product Color | Black |
| Product Material | Tempered Glass |
| Product Material | Steel |
| Product Material | Mesh |
| Product Material | Plastic |
| Cooler Type | Liquid Cooler |
| Form Factor | Mid-tower |
| Maximum CPU Cooler Height | 6.50" |
| Maximum PSU Length | 8.27" |
| Maximum GPU Length | 14.96" |
| Height | 16.9" |
| Width | 8.7" |
| Depth | 18.3" |
| Weight (Approximate) | 16.09 lb |
WARNING:: The plastic used in cable products can expose you to lead and lead components,
chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information go to www.P65Warnings.ca.gov
