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.
Most NAS-specific cases (Synology, QNAP, TerraMaster) use for the mainboard and M4 for drive backplanes. Generic “PC standoff kits” often lack M4, so check your chassis manual. Ease of Installation This is where things get fiddly.
| Thread Type | Common Use | NAS Example | |-------------|------------|--------------| | #6-32 UNC | Standard PC cases | Old Cooler Master NAS chassis | | M3 | Mini-ITX, some backplanes | Fractal Design Node 304 | | M4 | Rack rails, HDD cages | Supermicro chassis, SilverStone | 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.
Hand-tightening works for test-fitting. Brass standoffs have shallow knurling for finger grip. Do not use the mystery bag that came
Removing standoffs stuck to a motherboard screw. Use a proper standoff driver or risk spinning the entire post.
No integrated tool slot on many cheap versions. You’ll need a 5.5mm hex socket or needle-nose pliers. Installing standoffs inside a cramped NAS chassis (e.g., Jonsbo N2) is finger-cramping work. | Thread Type | Common Use | NAS
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.