CM Series

Micro-ATX Mini Tower Chassis

High-Efficiency Integration Solution
The highly flexible structure with a slim ODD bay hosts multiple 3.5”/2.5” drive bays, accommodates a variety of air and water coolers, and supports high-performance graphics cards up to 360 mm in length. Build different system layouts with ease to correspond to your system requirements.

‧Easy Integration
‧Easy Layout
‧Easy Assembly



MB Form Factor
Case Size
External Drive Bays
Internal Drive Bays
Front Ports
Product Dimensions
(H x W x D)
with Front Panel
Product Dimensions
(H x W x D)
w/o Front Panel
I/O Expansion Slots
Power Supply
Thermal Solution
Packing Dimensions
(H x W x D)
Shipping Information
  • CM721
    Micro-ATX, Mini-ITX
    32 L
    Mini Tower Chassis
    • Black
    Slim ODD x 1 (9.5mm Thickness)
    3.5"/2.5" x 2, 2.5" x 2
    USB 3.0 x 2,
    USB 3.2 Gen 2x2 Type-C x 1
    HD Audio Combo (CTIA – SPK/MIC)
    411 x 219 x 448 mm
    16.2” x 8.6” x 17.6”
    (with Foot Stands, PCI-E Clip, Side Panel Clips, Thumbscrews)
    390 x 205 x 400 mm
    15.4" x 8.1" x 15.7"
    PCI-E Expansion Slot x 4
    (Maximum Length 360 mm)
    .Maximum Graphics Card Length: 330 mm with Front Fans/Radiator Installed, Width: 160 mm
    .Maximum CPU Cooler Height: 155 mm
    ATX 12V Form Factor, PSII Size (Maximum Length up to 160 mm)
    Supports Air Cooling Fans
    ‧ Top: 120/140 mm x 1, 120 mm x 1
    ‧ Front: 120 mm x 2
    ‧ Rear: 120 mm x 1

    Supports Water Cooling Radiator
    ‧ Front: 240mm x 1
    ‧ Rear: 120mm x 1
    Meets RoHS, CE and FCC Class B Requirements
    ‧ 140mm Top Fan
    ‧ 120mm Top/Front/Rear Fan
    ‧ 240mm Liquid Cooler
    ‧ Tempered Glass Side Panel
    ‧ Adjustable Graphics Card Holder
    522 x 280 x 477 mm
    (20.6” x 11” x 18.8”)
    Single Packing:
    - 20’: 328, 40’: 884, 40’ H: 968
    Single Packing + Pallets:
    - 20’: 384, 40’: 768, 40’ H: 884
* The actual product is subject to change without prior notice. In Win Development Inc. reserves the right to make final modifications.


Quick-Release Ventilation Panel

The multi-layer panel and frame configuration discretely conceals the air ducts on both sides to provide sufficient airflow.

Configured up to 5 Cooling Fans, or 240mm Liquid Cooler and 3 Fans

Easy Access I/O

Features USB 3.0, USB 3.2 Gen 2x2 Type-C, and HD Audio combo jacks.
Never been easier to stay connected!

‧ USB 3.0 x 2
‧ USB 3.2 Gen 2x2 Type-C x 1
‧ HD Audio Combo (Headphone & Mic)





Highly Flexible Structure


Build different system layouts with ease to correspond to your system requirements.
The highly flexible structure hosts a slim ODD and multiple 3.5”/2.5” drive bays, accommodates a variety of air and water coolers, and supports high-performance graphics cards up to 360 mm in length.

Powerful Cooling Solution

Up to five fans (120 mm x 5 or 120 mm x 4 + 140 mm x 1) and two water cooling radiators (240 mm x 1 + 120 mm x 1) can be flexibly used on the top, front, and rear panels to direct airflow and greatly enhance cooling performance.

High-Performance GPU Scalability

The CM Series features up to 4-slot cards with a maximum length of 360 mm and a width of 160 mm, supporting higher-performance system configurations.

Tool-Less Storage Bays

The chassis supports up to two 3.5” and two 2.5” drives or four 2.5” drives.
The 3.5”/2.5” comes in the form of a drive caddy with additional 2.5” toolless brackets located on the motherboard tray.

Quick Release Dust Filter

The front, top, and bottom ventilated areas are equipped with various quick-release filters to effectively reduce dust. The tool-free design allows for simplified maintenance.

Cable Management

A spacious 20-30 mm cable management area is provided to neatly and quickly assemble your system. Smoothed cable management holes are designed to route cables easier to prevent potential damage.

Dual-Material Side Panels

The CM Series comes with both metal side panels or tempered glass and metal side panels. The two panels are interchangeable to correspond to anyone’s preference. The tinted tempered glass and black steel panels provide different visual effects to match the vibes of any environment.

Magnetic Silent Glass Side Panel (Optional)

Safety first! The tempered glass side panel is supported with anti-vibration cushions at all corners to add a layer of protection and avoid vibrations. Magnetic floating thumbscrews are present as an added safety locking mechanism.

Dedicated PSU Space

The exclusive PSU space at the bottom effectively dissipates and separates heat from other valuable internal components through a shroud. A great area to tidy up cables as a bonus!

Stabilized Foot Stands

The screwless foot stand is fitted at the base, providing solid support to maintain the stability and safety of the system.


‧ Floating Thumbscrew 2.5” HDD/SDD Brackets x 2

‧ Screwless 3.5”/2.5” Drive Bays x 2

‧ Floating Thumbscrew Steel Side Panel

‧ Magnetic Floating Thumbscrew Tempered Glass side panel

Front: Screwless Clip Filter

Top: Top Cover Magnetic Filter

Bottom: Slide-Out Filter

‧ Screwless Foot Stand Clip

External Drive Bays

‧ Slim ODD Bay x 1 (9.5mm Thickness)

Internal Drive Bays

3.5”/2.5” Drive Bays with 2 Tool-Free HDD Trays

2.5” Drive Bays with 2 HDD Brackets

Excellent Thermal Solution

‧ Supports Air and Liquid Cooler

‧ Top:120/140 mm Fan x 1, 120 mm Fan x 1

‧ Front:120 mm Fan x 2 or 240 mm Liquid Cooler x 1

‧ Back:120 mm Fan x 1 or 120mm Liquid Cooler x 1

Quick Release Dust Filter

‧ Screwless Clip Filter on the Front Panel

‧ Magnetic Filter on Top

‧ Bottom Slide-Out Filter


‧ Adjustable GPU Anti-Sag Support
The GPU holder can be adjusted with the graphics card positioning to keep your GPU from sagging.

‧ Magnetic Silent Tempered Glass Side Panel


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