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.

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.

AMPLE CABLE MANAGEMENT
The A21 provides a compartment behind the motherboard that is 33 mm wide to help you keep your wiring tucked away and tidy.

COLOR-COORDINATED BUILDS
Both variants of the A21 come with color-coordinated black or white internal I/O cables to compliment your build theme.

Specification

Product
Product id	894843
Brand	AsusTek
Partnr	90DC00H0-B09000
EAN/UPC code
Warranty (months)	24 months
Design
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	Y
Suitable for	Gaming
Cable management	Y
Maximum CPU cooler height	165 mm
Maximum graphics card length	380 mm
Maximum PSU length	210 mm
Ports & interfaces
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	2
Audio input	Y
Audio output	Y
Cooling
Number of front fans supported (max)	3
Front fans diameters supported	120, 140 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
Front radiator fan sizes supported	120, 140, 240, 280, 360 mm
Rear radiator fan sizes supported	120 mm
Top radiator fan sizes supported	120, 140, 240, 280, 360 mm
Weight & dimensions
Width	220 mm
Depth	430 mm
Height	465 mm
Weight	7300 g
Packaging data
Package width	525 mm
Package depth	288 mm
Package height	493 mm
Package weight	8400 g