Do not use the mystery bag that came with your $20 Chinese case. Invest $10–15 in a known brass kit from a brand like StarTech, SilverStone, or even a reputable Amazon seller (check reviews for “M4” mentions). Buy a proper 5.5mm hex driver – your fingers will thank you.
Worse: A missing standoff under a critical power plane can cause intermittent shorts. I’ve seen a 6-drive RAIDZ2 go poof because the builder used nylon standoffs everywhere, breaking the ground path. nas standoffs
One pro tip: Thread a spare screw into the standoff before installing it into the case. This gives you leverage and prevents over-tightening. A NAS runs 24/7. Vibration from hard drives can loosen cheap standoffs over months. Loose standoffs = floating motherboard = random crashes or USB dropouts. Do not use the mystery bag that came