ITX case

Change the embedded nut model to M3 3mmx4mmx5mm. (Originally 3x5x5) Buy 100 more.
Power port screws M4X16 (I used Silverstone SFX600W, tapping M4), others are M3 hex socket half-round screws. M3X6, M3X10, M3X12, M3X16, M3X32, countersunk M3X8, etc.
Self-resetting switch 12mm with ring light (5v or 12v are fine, I used the power supply to power 12v). The graphics card is less than 29cm long. The frame is 30cm.
(The PETG files marked should be printed with high temperature resistant material, pay attention to not use PLA, the hot air blown by the graphics card will cause deformation) It is recommended to use PETG for all printing.

Main accessories
Extension cable ITX dedicated double reverse 25cm.
https://item.taobao.com/item.htm?spm=a1z09.2.0.0.38b82e8d5VN6zc&id=619441127724&_u=1qman660ab7
(Color classification: PCI-E3.0 double reverse 25cm)

Front panel USB3.0 extension cable motherboard 19/20P
https://detail.tmall.com/item.htm?_u=1qman664c59&id=606165277326&spm=a1z09.2.0.0.38b82e8d5VN6zc
(Length: 30cm Color classification: Dual port combined)

Power supply extension cable
https://detail.tmall.com/item.htm?_u=1qman66ae3a&id=631069781301&spm=a1z09.2.0.0.38b82e8dbuHmkE&sku_properties=122216547:20213
(IEC320 male C14 with ear power cord [Transaction snapshot] Length: Other Color classification: IEC320 to C14 male left bend (0.3m)

Audio lamp 5v (USB or fan or power supply 5v)
https://detail.tmall.com/item.htm?_u=1qman66dac2&id=647037285570&spm=a1z09.2.0.0.6c7d2e8ds8KjLs
Color classification: [Ceramic white~ plug-in version without paint] 32 lights (one pack)

LED clock 5v (USB or fan or power supply 5v)
https://item.taobao.com/item.htm?spm=a1z09.2.0.0.6c7d2e8ds8KjLs&id=533899599589&_u=1qman66b8e4

Modified from B station UP Dream寐C86 drawings, other hardware compatibility is not guaranteed. (My configuration Gigabyte B550i RX6800 public version Silverstone SFX600w)

The side cover of the motherboard adds a pattern, and the back cover adds an 8mm power button hole.