MPN:
90DC00H0-B08000
ASUS A21 CASE/BLK Mini Tower Black
- Type
- PC
- Depth
- 465 mm
- Width
- 220 mm
- Height
- 430 mm
- Weight
- 7300 g
- Audio input
- Y
- Form factor
- Mini Tower
- On/off button
- Y
- Colour
- Black
Overview
DISCOVER HIDDEN POTENTIAL
The ASUS A21 is a PC case crafted for minimalist mainstream DIY PC builders, with support for a variety of AIO coolers and graphics cards, and plenty of airflow potential to keep things running smoothly.
BROAD COMPATIBILITY
Despite being a micro-ATX case, the A21 still supports up to 360 mm radiators, graphics cards up to 380 mm in length and CPU air coolers up to 165 mm in height, giving builders plenty of options to assemble their next PC.
CAPABLE COOLING
The front-panel mesh of the A21 is 40% porous to maximize the balance of airflow and RGB visibility. Users can add up to three 120 mm fans to this section of their build to solidly manage system temperatures.
Compatibility
Compatibility data is automatically generated. Always verify critical specs before purchase.
Technical Specifications
Showing 28 key specifications of 37
All values come from this product’s catalog record.- Type
- PC
- Depth
- 465 mm
- Width
- 220 mm
- Height
- 430 mm
- Weight
- 7300 g
- Audio input
- Yes
- Form factor
- Mini Tower
- On/off button
- Yes
- Colour
- Black
- Cable management
- Yes
- Maximum PSU length
- 210
- Number of 2.5" bays
- 1
- Number of 3.5" bays
- 2
- Supported HDD sizes
- 2.5,3.5
- Number of 5.25" bays
- 0
- Maximum CPU cooler height
- 165
- Number of expansion slots
- 5
- Maximum graphics card length
- 380
- Top fans diameters supported
- 120,140
- Top radiator sizes supported
- 120,140,240,280,360
- Rear fans diameters supported
- 120
- Rear radiator sizes supported
- 120
- Front fans diameters supported
- 120,140
- Front radiator sizes supported
- 120,140,240,280,360
- Number of top fans supported (max)
- 3
- Supported board sizes
- Micro ATX,Mini-ITX
- Number of rear fans supported (max)
- 1
- Number of front fans supported (max)
- 3
Show all 37 specifications
- Audio output
- Yes
- USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
- 2
- buildcores_verified
- 1
- buildcores_opendb_id
- 3342308a-8f3f-4de6-b4f8-a651b448203a
- buildcores_category
- PCCase
- max_gpu_length_mm
- 380
- max_cooler_height_mm
- 165
- max_psu_length_mm
- 210
- form_factor
- Micro ATX Mini Tower
Market Value History
Price history table
| Date | Price |
|---|---|
| 2023-12-30 | $69.99 |
| 2024-02-10 | $76.99 |
| 2024-02-27 | $69.99 |
| 2024-04-01 | $76.99 |
| 2024-04-09 | $76.98 |
| 2024-04-18 | $54.99 |
| 2024-04-29 | $69.99 |
| 2024-05-07 | $64.99 |
| 2024-06-01 | $69.99 |
| 2024-06-03 | $59.99 |
| 2024-06-18 | $69.99 |
| 2024-07-08 | $54.99 |
| 2024-07-15 | $69.99 |
| 2024-07-29 | $96.71 |
| 2024-08-05 | $74.99 |
| 2024-08-12 | $67.82 |
| 2024-08-20 | $62.48 |
| 2024-08-26 | $67.39 |
| 2024-09-02 | $71.25 |
| 2024-09-09 | $64.99 |
| 2024-10-08 | $56.99 |
| 2024-10-21 | $59.99 |
| 2024-11-11 | $65.99 |
| 2024-11-21 | $39.99 |
| 2024-11-25 | $54.99 |
| 2024-12-02 | $64.99 |
| 2025-01-09 | $64.99 |
| 2025-01-24 | $64.99 |
| 2025-02-10 | $57.99 |
| 2025-02-18 | $64.99 |
| 2025-02-25 | $57.99 |
| 2025-03-04 | $64.99 |
| 2025-03-17 | $57.99 |
| 2025-04-01 | $64.99 |
| 2025-06-10 | $87.12 |
| 2025-07-07 | $57.99 |
| 2025-07-28 | $64.99 |
| 2025-08-18 | $57.99 |
| 2025-09-02 | $43.81 |
| 2025-09-08 | $62.99 |
| 2025-09-22 | $66.99 |
| 2025-10-08 | $64.99 |
| 2025-10-24 | $64.99 |
| 2025-10-30 | $73.49 |
| 2025-11-03 | $75.99 |
| 2025-11-14 | $69.98 |
| 2025-11-20 | $58.99 |
| 2025-12-02 | $69.99 |
| 2025-12-12 | $59.99 |
| 2026-01-01 | $69.99 |
| 2026-04-10 | $82.49 |
| 2026-04-16 | $69.99 |
Customer Reviews & Feedback
Based on 45 verified customer reviews on Amazon US.
Review Verification
Hardware Quest synchronizes these ratings daily with Amazon to reflect real buyer experiences, build quality, and long-term reliability.
Sources
Product lifecycle
Catalog: on-marketThe current catalog record marks this product as on-market; this is not independent manufacturer confirmation.
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