ASUS
ASUS A21/WHT// Micro ATX PC Case White
White Micro ATX case with tempered glass, 40% porous mesh front, 33 mm cable routing space and support for 360 mm radiators plus 380 mm GPUs
- TypeMicro ATX
- ColorWhite
- Case MaterialSteel / Plastic / Tempered Glass
- Motherboard CompatibilityMicro ATX / Mini ITX
- Dust FiltersBottom / Top
- Internal 3.5" Drive Bays2
Options A21 (White)
- Clean cable management with hidden connector motherboard support
- Strong airflow from 40 percent porous front mesh panel
- Fits 360 mm radiators front and top for high-end liquid cooling
- Spacious 33 mm rear compartment keeps wiring tidy
- White colour-matched internal I/O cables complete the theme
Micro ATX Case for Clean Builds
The ASUS A21/WHT// is a white Micro ATX chassis built from steel, plastic and tempered glass. It accepts Micro ATX and Mini ITX motherboards and includes hidden-connector support for BTF boards. Two 3.5-inch and one 2.5-inch internal bays handle storage, while five expansion slots cover full-length add-in cards. Front I/O supplies two USB 3.2 Gen 1 ports and dual audio jacks.
Sustained Load Cooling Behaviour
A 40-percent porous front mesh feeds up to three 120-millimetre or two 140-millimetre intake fans, matched by identical top mounts and a single 120-millimetre rear exhaust. Radiator clearance reaches 360-millimetre units at front and top, letting liquid loops dissipate heat continuously without throttling. Dust filters on bottom and top panels protect the airflow path during long sessions.
Upgrade Path from Tighter Chassis
The 33-millimetre cable-management compartment and colour-coordinated internal I/O cables replace the cramped routing found in many budget cases. Builders moving from enclosures limited to 240-millimetre radiators or shorter graphics cards gain headroom for 380-millimetre GPUs and 165-millimetre CPU coolers. The jump is worthwhile when a compact footprint must still swallow high-wattage components.
Points forts
- Clean cable management with hidden connector motherboard support
- Strong airflow from 40 percent porous front mesh panel
- Fits 360 mm radiators front and top for high-end liquid cooling
- Spacious 33 mm rear compartment keeps wiring tidy
- White colour-matched internal I/O cables complete the theme
Caractéristiques
| Brand | ASUS |
|---|---|
| Model | A21/WHT// |
| Part Number | 90DC00H3-B08000 |
| Type | Micro ATX |
| Color | White |
| Case Material | Steel / Plastic / Tempered Glass |
| Motherboard Compatibility | Micro ATX / Mini ITX |
| Dust Filters | Bottom / Top |
| Internal 3.5" Drive Bays | 2 |
| Internal 2.5" Drive Bays | 1 |
| Expansion Slots | 5 |
| Front Ports | 2 x Audio, 2 x USB 3.2 Gen 1 |
| Fan Options | Front: 3 x 120 mm / 2 x 140 mm Top: 3 x 120 mm / 2 x 140 mm Rear: 1 x 120 mm |
| Radiator Options | Front:120 mm / 140 mm / 240 mm / 280 mm / 360 mm Top: 120 mm / 140 mm / 240 mm / 280 mm / 360 mm Rear: 120 mm |
| Max GPU Length | 380 mm |
| Max CPU Cooler Height | 165 mm |
| Max PSU Length | 210 mm |
| Dimensions | 18.3" x 8.7" x 16.9" |
| Weight | 18.52 lbs. |
| Poids d’expédition | 8.39 kg |
| Dimensions du colis | 508 × 508 × 279 mm |
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Questions sur cet article
How loud does the case get when fans are running all day?
The 40% porous front mesh balances airflow and dust filtering, so installed fans can move air at lower speeds for quieter operation.
What extra parts do I need before this case is usable?
You must supply a Micro ATX or Mini ITX motherboard, a power supply up to 210 mm long, a CPU cooler no taller than 165 mm, and your own storage drives.
Will my existing 360 mm radiator fit alongside the motherboard tray?
Yes, the case supports a 360 mm radiator in the front or top, and the 33 mm cable-management compartment behind the tray leaves room for tubing.
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