I've never built in a 1U chassis before and just wanted to get the go ahead from you guys to make sure everything is compatible. In addition to the basic components, I'm planning on adding 3-4 SSDs (possibly including Intel's 900p u.2 version via m.2) and maybe eventually a pcie network or storage card.
1U 250mm chassis (this can hold a pcie card with the use of an extension, yeah?)
https://www.mwave.com.au/product/tgc-1u-rack-mount-server-chassis-case-250mm-ultra-short-depth-for-itx-no-psu-ac14226
PSU (I don't understand these size specifications at all)
https://www.mwave.com.au/product/fsp-1u-300w-80-gold-ipc-psu-ac14463
Motherboard Z370M-ITX (not too worried about this one)
https://www.mwave.com.au/product/asrock-z370mitxac-lga-11512-miniitx-motherboard-ac10649
1U 250mm chassis (this can hold a pcie card with the use of an extension, yeah?)
https://www.mwave.com.au/product/tgc-1u-rack-mount-server-chassis-case-250mm-ultra-short-depth-for-itx-no-psu-ac14226
PSU (I don't understand these size specifications at all)
https://www.mwave.com.au/product/fsp-1u-300w-80-gold-ipc-psu-ac14463
Motherboard Z370M-ITX (not too worried about this one)
https://www.mwave.com.au/product/asrock-z370mitxac-lga-11512-miniitx-motherboard-ac10649