ASUS A21 Mid-Tower Case (Black)

Key Points

• Supports Micro-ATX and Mini-ITX motherboards
• Accommodates GPUs up to 380mm in length
• Fits CPU coolers up to 165mm in height
• Supports up to 360mm radiators in front or top
• Includes 33mm of rear space for cable management
• Features two USB-A 3.2 Gen 1 ports and dedicated audio jacks
• Compatible with BTF hidden-connector motherboards

The ASUS A21 Mid-Tower Case is the ideal foundation for your next small form factor build. Designed to balance a compact footprint with high-end compatibility, this case is perfect for gamers looking to maximize desk space without compromising on hardware performance. Its robust steel frame and tempered glass side panel offer a premium look that showcases your components while maintaining structural integrity.

Engineered for versatility, the A21 provides extensive cooling options, supporting up to three 120mm or two 140mm fans in the front and top panels, along with a rear 120mm fan. Water cooling enthusiasts can install radiators up to 360mm in the front or top, ensuring your system stays cool under pressure. With support for GPUs up to 380mm and PSUs up to 210mm, this case handles powerful hardware with ease.

Cable management is made simple with a 33mm-wide rear compartment, allowing for a clean, professional build. The case also features full support for BTF hidden-connector motherboards, further reducing visible clutter. With five expansion slots and flexible drive bay configurations, the ASUS A21 offers the storage and upgrade potential needed for a future-proof gaming system.