mATX I stuck: for this it was necessary to expand the cutout for the bar. I flattened the brackets for screwing the card, drilled 1 new leg for fixing the board (there is nowhere else). I pasted strips of polyurethane foam on the platform under the motherboard, and put the motherboard on them, securing it with a single screw. Holding on. But in this version, there is no space left for a 3.5" hard drive, and the SSD simply lies around the power supply. It is more difficult with a video card: a full-sized one can only fit into a regular place from the very edge, since it must be placed on the side of the main fan. But for this, on the motherboard the third slot from the processor must be PCI-E x16, and this is extremely rare. Either a single-slot video card, or cut a hole in the case for its installation in the first slot of the motherboard (but it still has to be short).
Computer case AeroCool Cylon black
39 Review
Fractal Design Node 304 - Black - Mini Cube Compact Computer Case - Small Form Factor - Mini ITX – mITX - Enhanced Airflow - Modular Interior - Includes 3x Fractal Design Silent R2 120mm Fans - USB 3.0
42 Review
Computer case be quiet! Pure Base 500 black
32 Review
Fractal Design Define R5 - ATX Mid Tower Computer Case - High Airflow and Silent Optimized - Includes 2x Dynamix GP-14 140mm Silent Fans - Water-Cooling Ready - Black
43 Review
External sound card BEHRINGER U-CONTROL UCA222
16 Review
Enhance Your Audio Experience with the Creative 70SB181000000 Sound Blaster X3 Digital Audio Converter - Black
13 Review
Enhance Your Audio Experience with ASUS Xonar U5 Sound Card
13 Review
Enhanced Sound Blaster Play! 4 Hi-res USB-C DAC and Sound Adapter with VoiceDetect Auto Mic Mute/Unmute, Dual Noise Cancellation, Bass Boost, Dynamic EQs | Ideal for Windows PC Video Calls
13 Review