Description
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 2×2 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 2×2 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 2×2 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 – White x1
Antec C7 ARGB E-ATX Mid Tower Gaming Chassis – Black
UGREEN Bluetooth 5.4 USB Adapter
Xiaomi Magnetic Reading Light Bar
Xiaomi Mijia Electric Shaver Pro - Silver
UGREEN AV118 3.5mm AUX Extension Cable 1m – Male to Female –(Black)
Xiaomi Body Composition Scale S400 PRO
Antec CX200M Elite Micro-ATX | ITX RGB Mini-Tower Gaming Chassis - Black
Antec FLUX ATX WOOD Mid Tower Gaming Chassis – Black
Antec CX500M Micro-ATX | ITX RGB Mini-Tower Gaming Chassis Type-C - White
Gizzu 4-in-1 Type-C to Dual HDMI Hub
Gizzu 4K HDMI to DP Cable (1.8m) - Black
UGREEN 3.5mm Aux Cable 1.5m
Antec C5 CURVED ARGB ATX | Micro-ATX | ITX ARGB Dual Chamber Mid-Tower Gaming Chassis - Black
UGREEN LP121 Cable Protection Tube 25mm x 5M - Black
Antec C5 ARGB ATX DUAL Mid Tower Gaming Chassis – Black
Antec Performance FT1 E-ATX |ATX |M-ATX | ITX ARGB Full-Tower Gaming Chassis - Black
UGREEN DisplayPort to HDMI Adapter – 1080P@60Hz, Male to Female Converter
Antec C8 Curved Wood E-ATX | ATX | Micro-ATX | ITX Dual Chamber Gaming Chassis - Black
Gizzu 1080P HDMI to VGA Adapter with Audio
WINX LINK Simple Type-C to USB Adapter Dual Pack
Antec C8 Basic E-ATX | ATX | Micro-ATX | ITX Dual Chamber Gaming Chassis - Black
Xiaomi Electric Shaver S500 Replacement Head
Xiaomi Smart Camera C500
Antec C3 ARGB ATX | Micro-ATX | ITX ARGB Mid-Tower Gaming Chassis - Black
DeepCool CG590 Mesh 2F ATX ARGB Gaming Chassis - Black
Antec CX500M ARGB Gaming Chassis | M-ATX | ITX | Type-C - Black
DeepCool CH260 Wood mATX Gaming Chassis White
UGREEN USB Type-C Dual Audio and Charging Adapter (15W PD, 2-in-1 Splitter)
Antec FLUX PRO E-ATX Full Tower Gaming Chassis – White
Antec FLUX PRO E-ATX Full Tower Gaming Chassis – Black
Antec FLUX SE E-ATX | ATX | Micro-ATX | ITX Mid-Tower Gaming Chassis Wood Front Panel- Black
Antec FLUX Rear ARGB ATX Mid Tower Gaming Chassis - Black
Gizzu USB3.0 to VGA Adapter
Antec C2M ARGB Compact Micro-ATX Gaming Chassis - White
Cudy BU530 Bluetooth 5.3 Nano USB Adapter
Xiaomi Motion Activated Night Light 2
Antec C6 CURVED AIR ATX | Micro-ATX | ITX Mid-Tower Gaming Chassis - Black
UGREEN CM129-40964 USB-A to 3.5mm External Stereo Sound Adapter - Black
UGREEN USB 3.0 Male to Type-C 3.1 Female Adapter, Data Transfer and Charging 




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