This thread is for documenting changes between versions, as well as suggesting changes/improvements that may be incorporated into future versions of the M1. Please note the following:
M1 changelog
M1 V6
M1 V5:
M1 V4:
M1 V3:
M1 V2:
- Changes should maintain parts compatibility between versions. In general this means they can only be relatively minor things - i.e. no changes to overall dimensions.
M1 changelog
M1 V6
- 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
M1 V5:
- 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
M1 V4:
- 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)
M1 V3:
- 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
M1 V2:
- 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
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