Build the setup you’ve always imagined with the ASUS A31 PLUS Mid Tower, a case designed to match your ambition. Whether you're upgrading or starting from scratch, this chassis gives you the performance headroom, visual impact, and build flexibility to bring your desktop gaming rig to life.

You’ll enjoy wide motherboard support, including ATX, Micro-ATX, Mini-ITX, and BTF compatibility, giving you the freedom to build with future-ready components. The ASUS A31 PLUS Mid Tower doesn’t just house your hardware – it showcases it. With 4 mm tempered glass panels on both the front and left sides, your RGB lighting, clean cable runs, and premium components are always on full display.

Out of the box, you get four pre-installed ARGB 120 mm fans – three mounted on the side and one at the rear – delivering strong airflow and stunning lighting without the need for additional upgrades. Cooling flexibility is extensive, with support for up to three 12 mm or two 140 mm fans on the top, and space for a 140 mm or 120 mm fan at the rear. Radiator support includes 360 mm, 280 mm, 240 mm, 140 mm, and 120 mm options on the top, plus a 120 mm radiator at the rear.

Internally, there’s space to support high-performance components, including graphics cards up to 380 mm in length, CPU air coolers up to 165 mm in height, and power supplies up to 200 mm long. Two combo drive bays accommodate either 2.5" SSDs or 3.5" HDDs, giving you storage flexibility without sacrificing space. Seven expansion slots ensure full upgrade capability, whether you're adding capture cards, GPUs or high-speed networking.

The front I/O is built for speed and convenience, featuring one USB 3.2 Gen 2x2 Type-C port, two USB 3.2 Gen1 ports, and a 3.5 mm combined headphone/microphone jack. With 34 mm of cable management space and removable dust filters at the top and bottom, you’ll find it easy to keep things clean and efficient over the long run.

Measuring 23.8 x 51.1 x 43.5 cm and weighing 9100 g, the ASUS A31 PLUS Mid Tower strikes the perfect balance between size, durability and airflow — giving you a solid foundation to build a high-performance gaming PC you can be proud of.

FEATURES:

• Compatible with ATX, Micro-ATX, Mini-ITX, and BTF motherboards
• Dual 4 mm tempered glass panels on the front and left side
• Includes 4 pre-installed ARGB 120 mm fans for vibrant cooling
• Top panel supports up to 360 mm radiators for advanced thermal performance
• Supports high-performance GPUs up to 380 mm in length
• Spacious interior with 165 mm CPU cooler clearance and 200 mm PSU support
• Front I/O includes USB 3.2 Gen 2x2 Type-C and dual USB 3.2 Gen1 ports
• 7 expansion slots for multi-GPU and add-in card configurations
• Removable dust filters on top and bottom for easy cleaning
• 34 mm cable management clearance for neat, efficient builds
• Two combo drive bays for flexible 2.5"/3.5" storage options
• Sleek ASUS A31 PLUS Mid Tower design balances airflow, space, and aesthetics

SPECIFICATIONS:

• Case Size: Mid Tower
• Motherboard Support:
  • BTF motherboard compatible
  • Mini-ITX
  • Micro-ATX
  • ATX
• Drive Bays: 2 x 2.5"/3.5" Combo Bay
• Expansion Slots: 7
• Front I/O Port:
  • 1 x USB 3.2 Gen 2x2 Type C
  • 2 x USB 3.2 Gen1
  • 1 x headphone / Microphone
• Tempered Glass:
  • Left Side
  • Front Side
• Radiator Support (Top):
  • 360 mm
  • 280 mm
  • 240 mm
  • 140 mm
  • 120 mm
• Radiator Support (Rear): 120 mm
• Cooling Support (Top):
  • 2 x 140 mm
  • 3 x 120 mm
• Cooling Support (Rear):
  • 1 x 140 mm
  • 1 x 120 mm
• Pre-installed Fans (Rear)
  • ARGB
  • 1 x 120 mm
• Pre-Installed Fan (Side)
  • ARGB
  • 3 x 120 mm
• Maximum CPU Cooler Height: 165 mm
• Maximum GPU Length: 380 mm
• Maximum PSU Length: 200 mm
• Removable Dust Filters:
  • Bottom
  • Top
• Maximum Cable Management Space: 34 mm
• Dimensions: 23.8 x 51.1 x 43.5 cm
• Weight: 9100 g
• BTF motherboard compatible: Yes

WHAT'S IN THE BOX:

• Asus A31 PLUS Mid Tower ATX Chassis - Black x1