Out of Stock
Important Information
M1V6 orders made before September 15th 23:59 PST shipped. Tracking numbers will be sent around September 27th.
The next batch of Black color M1 *might be restocked in December, no promises.
The M1 with an Optical Disk Drive Slot on the Top Panel has been discontinued. If you must have the ODD Slot, you can buy the Top Panel with ODD Slot cutout separately.
Tempered Glass, Acrylic Window kit and other M1 Accessories are in the works as separate kits for 2019 Q4.
For M1 V5 and older versions, the USB-C Front I/O is in the works as an upgrade kit for 2019 Q4 as well.

The original crowdfunded computer enclosure, the M1 couples a clean all-aluminum construction with clever, flexible layout options, providing full-tower class desktop performance within a 12.6L frame.


Version Updates
  • Front I/O
    • Added USB Type C port (requires motherboard 20 pin Type E header)
    • Changed headphone and mic ports to single combo jack
    • All ports use new molds
    • Redesigned I/O bracket with swappable no-I/O faceplate (ports can be removed for cleaner look/slightly better 2.2+ slot GPU compatibility)
  • Chassis
    • Redesigned ventilation holes on bottom and rear to improve airflow
    • Added longer fan mounting slots on the bottom
    • Bottom vents moved to separate steel floor plate attached to underside of chassis
    • Added bottom magnetic dust filter
    • Threaded inserts on PCI bracket
    • Added M4 screw holes for window mounting to chassis
    • Front-right chassis flange reduced, SFX PSU can now be installed from the right side
    • Reduced rear-left chassis flange to facilitate GPU installation
    • Enlarged chassis front GPU passthrough to facilitate GPU installation and provide more room for oversized GPUs
    • Removed four panel mounting clips from side flanges to reduce incidence of oversized GPU conflicts
    • Changed front 2.5" drive mounting to use screws instead of rubber grommets to save space/reduce complexity
    • Integrated fan bracket mount into chassis flanges
    • Added inside-front mounting for SFX PSU
  • Motherboard tray
    • Changed to removable standoffs
  • ODD bracket
    • Redesigned to single piece, now supports 9.5mm and 12.7mm ODD drives
  • HDD cage
    • Redesigned to two pieces, now supports 2x 3.5" drives *or* 3x 2.5" drives; now allows mounting to inside front 2.5" mount (3x 2.5" configuration only)
  • Top panel
    • Changed to 2mm thick
  • Side panels
    • Extended ventilated area adjacent to GPU
  • Other
    • New 15mm tall molded rubber feet
    • New adjustable GPU support bracket (adjustable for 2-2.5 slot cards)
    • Eliminated ATX PSU bracket
  • Front USB 3.0 ports cleaner look (removed port edges flanges)
  • Motherboard tray is now fastened with screws instead of rivets to facilitate replacement or modding
  • Later batches only:
    • Front USB 3.0 ports color changed from blue to black
    • Removed #6-32 screws for PSU mounting (some users were incorrectly using them in M3-threaded holes, stripping the threads)
      • Re-added for later batches, now in a separate labeled bag
  • Fan bracket changed to steel and magnetic filter is now included
  • Fan bracket mounts changed to allow 2mm of additional travel (allows 140mm fan w/120mm mounting holes to be used alongside a 120mm fan)
  • Braces added to bottom corners of chassis for increased rigidity/decreased probability of wobbling
  • 0.3mm decrease in side and front panel height
  • Extra QC for wobbling & panel uniformity
  • SFX bracket raised 2mm and flange trimmed for better SFX-L support (CAUTION: SFX-L is still a very tight fit with long GPUs, even with the revised bracket)
  • Additional motherboard standoffs added for compact mATX boards (226x173mm max w/SFX bracket; see thread and google docs spreadsheet)
  • Slightly increased CPU cutout size
  • Enlarged CPU cutout upward on motherboard tray
  • Additional cutouts at bottom of motherboard tray
  • Move rear 92mm fan and tubing holes down 2mm
  • Additional 3.5" HDD mounting location at forward bottom of chassis
  • Cable tie holes on chassis bottom reduced from 10 to 5
  • SSD stacking brackets modified to allow stacked 7mm thick SDDs closer
  • ATX PSU bracket moved back to allow more clearance behind chassis front
  • 3.5" HDD cage fixed to work in upper fan bracket position
  • ODD bracket screw holes reduced for better M2 screw fit
  • No top panel screw
  • More SSD mounting screws
  • Extra side panel clips
  • Dome head M5 screws changed to flat head M5
  • Shortened internal AC cable, changed to left angle
  • Threaded inserts at side bracket mounting points
  • Sub-millimeter increases to exterior panel dimensions to mitigate panel warping
  • Feet color changed to black for silver cases


In the box: M1 enclosure, internal power extention cable, accessory kit

M1: The original crowdsourced computer enclosure.

The M1 started with a simple idea: motivated by the shortcomings of the enclosures that had come before, it set forth to be better in form and function. From the overall aesthetic design, down to the smallest detail, every facet was subject to the scrutiny and feedback of hobbyists, DIY'ers, and average users alike. The outcome of that effort? A 12.6L enclosure that sets itself apart with a unique combination of capability and flexibility, in a deceptively small and appealingly understated package.


A handsome desktop you can actually put on your desk.

With its sleek, subtly-faceted brushed aluminum front panel, the M1 presents a refined, minimalist face to the world. An angular, arched cutout exposes the front USB 3.0 and HD audio ports, flanking the central power button, whose two-color LED glows crisply – but not overly bright – when powered. Side and top panels are perforated with symmetrical ventilation areas, ensuring both visual harmony and proper system airflow. And fully toolless exterior panels allow easy access to the interior, while keeping the clean, smooth surfaces free of the visual clutter of screws or fasteners.

Over one thousand 3mm ventilation holes
Black or silver anodized panels


The biggest limitation is your imagination.

Designed for mini-ITX motherboards, the M1 nevertheless sports features shared by much larger enclosures. Full-length dual and triple-slot video cards can be installed with ease via large openings in the chassis. Top-down CPU coolers with 120mm or 140mm fans can be used in the M1, up to 130mm in height. All-in-one coolers with 120mm or even 240mm radiators can also be mounted internally. And – for the truly hardcore – the M1 allows for custom water cooling loops using a slim 240mm radiator, providing greatly reduced noise or additional overclocking headroom. Never before has this level of capability been possible in a enclosure of this size. High performance, low noise, and small size is no longer a "choose two" proposition.

130mm CPU cooler support
317mm dual-slot GPU support


Idealistic design. Everyday practicality.

Coming in at a svelte 12.7 liters in volume, the all-aluminum chassis has the proportions and features of much larger enclosures. Appearing as a conventional tower enclosure on a much reduced scale, the M1 enjoys a footprint that's substantially smaller than many cube-style small form factor enclosures. And, through its use of 1.5mm high-grade aluminum, its compactness and weightlessness don't come at the expense of rigidity, making the M1 easy to travel with or pack into a carry-on.

Lightweight 2.0kg enclosure weight
1.5mm all-aluminum chassis and panels

A space saver without compromise?

Watch the Linus Tech Tips review



M1V6B2: M1 Version 6, black exterior, vented aluminum panel
M1V6S2: M1 Version 6, silver exterior, vented aluminum panel

Enclosure Volume


Enclosure External Dimensions (L x W x H)

Excluding feet/protrusions: 328mm x 160.6mm x 241.7mm
Including protrusions: 338mm x 160.6mm x 255.5mm

Enclosure Interior Dimensions

307mm x 157mm x 237mm

Enclosure Weight


Shipment Weight


Shipment Dimensions

400mm x 240mm x 340mm


Exterior: brushed anodized aluminum, 1.5mm front and sides, 2mm top panel
Interior frame: 1.5mm matte black painted aluminum
Interior fan bracket and vented undercarriage: 1.2mm black steel


Power button with dual-color LED backlight (power on/HDD access)
Two USB Type A ports (to 19 pin USB header)
One USB Type C port (to 20 pin/Type E header, see list of compatible boards)
One 3.5mm headphone/mic combo jack (to HD Audio header)
Blank no-I/O face plate included



Mini-ITX, Mini-DTX

CPU Cooler Support
  • Maximum height: 130mm with side fan bracket installed, 135mm without
  • CPU Heatsinks must not extend past the top edge of the motherboard by more than 10mm.
  • CPU Heatsinks that extend beyond the front edge of the motherboard may interfere with the 3.5" HDD cage and/or power supply (in the default right-side mounting location).
Graphics Card Support

Cards 2.2 slots (45mm) or less:

  • Length: 317mm
  • Height: 140mm at mid-card, 130mm at rear corner, 125mm at front corner (if over 280mm long)

Cards over 2.2 slots (45mm):

  • Length: 280mm (with front I/O ports), 290mm (with front I/O ports removed)
  • Height: 130mm, 125mm at front corner (if over 280mm long)

Note on height limits: please allow 15-20mm for PCIe power connectors

Drive Support

Optical Disc Drive Support(requires optional top panel with ODD slot)

  • ODD bracket supports slim slot-loading optical drives in 9.5mm or 12.7mm sizes
  • Alternatively, bracket may be used for a single 2.5" drive (up to 14mm thick)

2x 3.5" HDDs supported via removable brackets attached to the fan bracket (uses up one side 120mm fan location)

  • Alternatively, brackets can support 3x 2.5" drives (up to 15.5mm thick)

1x 2.5" drive mount on inside-front of chassis (any thickness); also supports mounting of the HDD brackets in 3x 2.5" drive configuration in place of a single 2.5" drive

Fan Support
  • Side (fan bracket): 2x 120mm
  • Bottom: 2x 120mm
  • Rear: 1x 92mm
Liquid Cooling Support
  • 1x 240 radiator or up to 2x 120 radiators are supported on the side fan bracket
  • Radiators less than 35mm thick are recommended
  • 1x 240 or 2x 120 radiators precludes use of the HDD brackets attached to the fan bracket
Power Supply Support



How can I order an M1?

When cases are in stock, you may order directly from this website. At times when we have no inventory available, we may instead offer pre-orders for the next production run.

How long will it take to receive my M1? When will I get a tracking number?

Orders are usually shipped in batches weekly, with exception to holidays. Typically, order made between Monday to Saturday are shipped the following week between Wednesday to Friday.

Something is out of stock! Will it be restocked?

Items are restocked after production runs. The period between production runs varies based on demand, but is typically one production run every 3 months.

What's included with the M1?

The M1 comes with the following: screws for drive and fan mounting, rubber softmounts for drive mounting, 3.5" HDD cage, 2.5" stacking brackets, slim optical drive bracket, SFX PSU bracket, front USB/audio ports and power switch, left-angle internal AC cable, magnetic filters for the side and bottom. No fans or paper manual are included.

What's the difference between different versions of the M1?

Each version has a few minor revisions. You can see a list of changes here.

Can I turn the optical drive slot version into the no-ODD slot version if I get the slotless top panel?

Yes. The only difference is the top panel, which may be easily swapped out.

Are the panels compatible with a different version of the chassis (e.g., V2 chassis with V3 panels)?

Panels up to V5 are cross-compatible with all all other versions. Panels from V6 are backward-compatible, but older panels will not work with the V6 chassis.

There's no manual! What do all the screws do?
How do I remove the side panels?

The side, top, and front panels require no tools to remove. Using your fingertips, simply pull them away from the case by the edges.

Will [insert component here] fit in the M1?

Please see the compatibility section for size restrictions and links to more information.

Are there any accessories designed for the M1?

Yes! Demciflex offers magnetic filters specially designed for the M1. They can be purchased directly from their site. Additionally, other members of the community have spearheaded the development of the following accessories for the M1:

Why isn't the M1 microATX? All you have to do is add a slot!

One of the primary design goals of the M1 was to be able to house, power, and cool high performance components, while being as small as reasonably possible. Mini-ITX is the smallest motherboard form-factor capable of supporting such a build, and is actually considerably smaller than mATX. In particular, the short length of mini-ITX is what allows the front-mounted power supply, and by extension, the side-mounted dual radiator. Keeping the same layout with mATX would result in a a significantly larger case.