Three front ARGB fans and one rear ARGB fan provide airflow and lighting out of the box.
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Product description
Description and product details Overview, features, specifications, compatibility and FAQ
HIGH AIRFLOW. 4× ARGB FANS. 360MM AIO. USB-C 20GBPS.
MSI MAG FORGE 321R AIRFLOW Mid-Tower PC Case — Black
The MSI MAG FORGE 321R AIRFLOW is a high-airflow mid-tower chassis built around a ventilated mesh design, strong cooling expansion, and clean ARGB presentation. Four 120mm ARGB fans are pre-installed, while the chassis supports up to 11 × 120mm system fans.
Support for ATX, Micro-ATX, and Mini-ITX motherboards combines with up to 390mm GPU length, a top-mounted 360mm radiator, tempered-glass side panel, integrated ARGB control board, and modern front USB-C connectivity.
11 Fansmaximum support
390mmGPU clearance
360mmtop radiator
Extensive mounting locations allow a highly ventilated cooling configuration.
Generous graphics-card clearance accommodates many large modern GPUs.
Front USB 3.2 Gen 2x2 Type-C provides fast connectivity for compatible devices.
Optimized Ventilation
High-Airflow Mesh Design
Mesh ventilation across the front and side areas helps fresh air reach heat-producing components.
Airflow-Focused Front
A ventilated front panel reduces intake restriction for the front cooling fans.
Up to 11 Fans
Fan positions across the front, top, rear, side, and PSU shroud provide flexible airflow tuning.
4 Fans Included
Three front 120mm ARGB fans and one rear 120mm ARGB fan are factory installed.
Magnetic Top Filter
The removable magnetic top dust filter makes routine cleaning easier.
Liquid Cooling Ready
Up to 360mm Radiator Support
Multiple radiator locations give builders flexibility when planning an AIO-cooled system.
360mm Top
The top supports 120, 240, 280, and 360mm radiator configurations.
Front Radiator
The front supports 120, 140, and 240mm radiators.
120mm Rear
A rear 120mm radiator can be installed in compatible cooling configurations.
160mm CPU Cooler
Air coolers up to 160mm in height are supported.
ARGB Showroom
MSI Mystic Light Ready
Showcase illuminated components through the tempered-glass side panel and control compatible lighting through the integrated system.
4× ARGB Fans
Integrated addressable-RGB fans create a vivid illuminated front and rear layout.
ARGB Control Board
The built-in lighting control board simplifies connected ARGB fan management.
Insta-Light Loop
The dedicated LED switch cycles through available lighting effects directly from the case.
Tempered Glass
A clear side panel puts internal hardware and synchronized lighting on display.
Large Hardware Compatibility
Built for Modern Gaming Components
390mm GPU Length
Supports graphics cards up to 390mm long and 150mm high.
ATX Motherboards
Compatible with ATX, Micro-ATX, and Mini-ITX motherboard form factors.
ATX PSU Support
Supports ATX power supplies up to 200mm long when the HDD tray is removed.
Flexible Storage
Provides one dedicated 2.5-inch mount plus two combination 2.5/3.5-inch mounts.
Modern Connectivity
Front USB-C 20Gbps
USB-C 20Gbps
One USB 3.2 Gen 2x2 Type-C port supports up to 20Gbps with compatible hardware.
2× USB-A 5Gbps
Two USB 3.2 Gen 1 Type-A ports provide convenient front-panel peripheral access.
Audio / Microphone
Front audio connectivity keeps headsets and microphones within easy reach.
LED Switch
A dedicated lighting button offers direct control over connected supported ARGB effects.
Airflow-Focused Mid Tower
Key Features
✓Mid-tower ATX gaming chassis
✓ATX / Micro-ATX / Mini-ITX motherboard support
✓3 × front 120mm ARGB fans pre-installed
✓1 × rear 120mm ARGB fan pre-installed
✓Up to 11 × 120mm fan positions
✓Up to 6 × 140mm fan positions
✓Top radiator support up to 360mm
✓Front radiator support up to 240mm
✓Rear 120mm radiator support
✓GPU support up to 390mm length / 150mm height
✓CPU cooler support up to 160mm
✓ATX PSU support up to 200mm without HDD tray
✓Tempered-glass side panel
✓Built-in ARGB control board
✓MSI Mystic Light support
✓Magnetic top dust filter
✓USB 3.2 Gen 2x2 Type-C 20Gbps front port
✓2 × USB 3.2 Gen 1 Type-A 5Gbps front ports
✓7 expansion slots
Flexible Gaming Chassis
Perfect For
Maximum Ventilation
Extensive fan positions and mesh ventilation make airflow the core of the chassis design.
360mm Top Support
Install large compatible liquid coolers in the top of the chassis.
390mm Clearance
Generous graphics-card length support accommodates many high-performance designs.
Lighting Included
Four included ARGB fans and a control board create an illuminated build immediately.
Detailed Model Information
Technical Specifications
Specifications verified against MSI Canada for the MAG FORGE 321R AIRFLOW.
| Brand | MSI |
| Series | MAG |
| Model / MPN Canada | MAG FORGE 321R AIRFLOW |
| Colour | Black |
| Case Form Factor | Mid Tower |
| Motherboard Support | ATX / Micro-ATX / Mini-ITX |
| Pre-Installed Fans | Front: 3 × 120mm ARGB; Rear: 1 × 120mm ARGB |
| Front Fan Support | 3 × 120mm / 2 × 140mm |
| Top Fan Support | 3 × 120mm / 2 × 140mm |
| Rear Fan Support | 1 × 120mm |
| Side Fan Support | 2 × 120mm |
| PSU Shroud Fan Support | 2 × 120mm |
| Front Radiator Support | 120 / 140 / 240mm |
| Top Radiator Support | 120 / 240 / 280 / 360mm |
| Rear Radiator Support | 120mm |
| Maximum GPU Length | 390mm / 15.35in |
| Maximum GPU Height | 150mm / 5.91in |
| Maximum CPU Cooler Height | 160mm / 6.29in |
| PSU Support | ATX |
| Maximum PSU Length | 200mm / 7.87in without 2.5/3.5in HDD tray |
| Drive Mounts | 1 × 2.5in + 2 × 2.5in / 3.5in |
| Expansion Slots | 7 |
| Front I/O | 1 × USB 3.2 Gen 2x2 Type-C; 2 × USB 3.2 Gen 1 Type-A; Mic-in / Audio-out; LED Switch |
| Lighting | ARGB / MSI Mystic Light / Built-in Control Board |
| Side Panel | Tempered Glass |
| Top Dust Filter | Magnetic / Removable |
| Dimensions (D × W × H) | 472.5 × 210 × 498mm / 18.60 × 8.26 × 19.60in |
| Net Weight | 7.05kg / 15.54lb |
| Gross / Shipping Weight | 8.35kg / 18.41lb |
Shop With Confidence
Why Buy From OPCBleu?
High-Airflow MSI Gaming Chassis.
The MAG FORGE 321R AIRFLOW combines four included ARGB fans, extensive cooling support, large-GPU compatibility, tempered glass, and modern USB-C connectivity.
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Helpful Answers
FAQs
How many fans are included with the MSI MAG FORGE 321R AIRFLOW?
Four 120mm ARGB fans are pre-installed: three in the front and one in the rear.
How many fans can the case support?
The chassis provides positions for up to eleven 120mm system fans.
What is the maximum GPU length?
MSI specifies up to 390mm of graphics-card length and 150mm of GPU height.
Does it support a 360mm liquid cooler?
Yes. The top radiator position supports up to 360mm. The front radiator position supports up to 240mm.
Does the case have USB-C?
Yes. The front I/O includes one USB 3.2 Gen 2x2 Type-C port supporting up to 20Gbps with compatible hardware.
What motherboard sizes are supported?
ATX, Micro-ATX, and Mini-ITX motherboards are supported.
What is the case weight?
The net case weight is 7.05kg / 15.54lb. MSI lists a gross packaged weight of 8.35kg / 18.41lb.
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