Revision History - M1 Classic

V6.1 Updates:

Chassis

Adjusted front SFX mount position
Adjusted 2.5" mounting holes
Adjusted 2.5" drive SATA connector cutouts
Added threaded nuts to fan bracket mounting holes

Front I/O
- New punch tooling for smoother edges
- Audio combo jack changed to black
SFX bracket
- Added/modified flanges to mitigate possible PSU movement
ODD bracket
- Adjusted 2.5" drive mount screw holes for improved stacking bracket support
- Added chassis mounted 2.5" drive screw access holes
- Adjusted aux chassis 2.5" drive screw access holes
Parts box
- Removed 120mm fan filters
- Fan grille count changed to 2
- Adjusted screw counts
Power cable
- Changed to right angle

V6 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)

V5 Updates:

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

V4 Updates:

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)

V3 Updates:

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