ASUS · Cabinet

ASUS A21 PLUS

Micro Tower · mATX / ITX · GPU up to 380 mm

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Form factor Micro Tower
Motherboard support mATX / ITX
GPU clearance 380 mm

ASUS A21 PLUS is a micro tower PC cabinet that takes mATX / ITX motherboards and graphics cards up to 380 mm long.

Specifications

Key specs

Form factor: Micro Tower
Motherboard support: mATX / ITX
GPU clearance: 380 mm
Part number: 90DC00H0-B19010
EAN / UPC: 4711387508084

Design

Form factor: Micro Tower
Type: PC
Product colour: Black
Supported motherboard form factors: micro ATX, Mini-ITX
Number of 3.5" bays: 2
Number of 2.5" bays: 1
Number of expansion slots: 5
Side window: Yes
Suitable for: Gaming
Illumination: Yes
Illumination colour: Multi
Maximum CPU cooler height: 16.5 cm
Maximum graphics card length: 38 cm
Maximum PSU length: 21 cm

Ports & interfaces

USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity: 2

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Cooling

Front fans installed: 3x 120 mm
Number of front fans supported (max): 3
Front fans diameters supported: 120,140 mm
Rear fans installed: 1x 120 mm
Number of rear fans supported (max): 1
Rear fans diameters supported: 120 mm
Number of top fans supported (max): 3
Top fans diameters supported: 120,140 mm
Liquid cooling capability: Yes
Front radiator sizes supported: 120,140,240,280,360 mm
Rear radiator sizes supported: 120 mm
Top radiator sizes supported: 120,140,240,280,360 mm

Storage

Supported HDD sizes: 2.5,3.5"
HDD/SSD combo cage: Yes

Weight & dimensions

Width: 220 mm
Depth: 430 mm
Height: 465 mm
Weight: 8.1 kg

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About this product

The ASUS A21 PLUS microATX case offers support for hidden-connector motherboards, 360 mm radiators and 380 mm graphics cards, with two color options, four pre-installed ARGB fans and clean cable management.

A21 PLUS vs similar cabinets

	ASUS A21 PLUS	ASUS A23 PLUS TG ARGB BLACK	ASUS A23 PLUS TG ARGB WHITE	VIDA SPIRE M MATX WHITE GAMING CASE
Form factor	Micro Tower	Micro Tower	Micro Tower	Micro Tower
Motherboard support	mATX / ITX	mATX / ITX	mATX / ITX	mATX / ITX
GPU clearance	380 mm	380 mm	380 mm	300 mm
Released	—	—	—	2026

Questions about the A21 PLUS

What are the main specs of the ASUS A21 PLUS?

Micro Tower, mATX / ITX, GPU up to 380 mm.

What form factor is the ASUS A21 PLUS?

Micro Tower.

With photos

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