Check the following measurements for the correct size. These bags (flat) are much closer to 11" x 15" than 12" x 16" as listed. The ATX board will most likely NOT fit, I know the ones I've tried don't fit. So check how much you need and don't forget to factor in the waste of lifting parts on the board(s). I expected them to be cozy which is what I wanted but they are too small. Otherwise they appear to be serviceable bags.
๐งณ Protective Carrying Case for SanDisk Extreme Portable SSD (250GB/500GB/1TB/2TB/4TB) - Not Compatible with Pro Version
11 Review
1 TB External SSD Samsung T7, USB 3.2 Gen 2 Type-C, grey
15 Review
External sound card Focusrite Scarlett 2i2 3rd Gen
16 Review
4 TB External HDD Seagate One Touch, USB 3.2 Gen 1, black
28 Review
Logitech HD Webcam C270: Crisp 720p Widescreen Video Calling & Recording (960-000694), Lightweight and Portable at 3.15 lb.
192 Review
Enhance Your Visual Experience with Logitech C260 Webcam
78 Review
Apple AirPods Pro MagSafe RU Wireless Headphones, White
159 Review
Sennheiser PC 8 2 Cancelling Microphone
71 Review