PSA: If you don't have ATX bracket for your SFX PSU you're likely still could mount it in. For sure looks sketchy, but works surprisingly well (used it like that for months). :
Free STL file SFX to ATX Power Supply Adapter Bracket・3D print model to download・Cults
Corsair SF Series SFX to ATX Adapter Bracket 2.0 | AusPCMarket
Free STL file SFX to ATX Power Supply Adapter Bracket・3D print model to download・Cults
Thermaltake Toughpower SFX Gold 600W Power Supply Unit-Universal Compact Design for All Mainstream PC Cases – SFX to ATX PSU Adapter Bracket - EnosTech.com
PP08
Corsair SF600 SFX PSU Preview | Glob3trotters
Amazon.com: Silverstone PP08 Universal SFX to ATX Power Supply Adapter Bracket, Black, SST-PP08B : Electronics
Amazon.com: Silverstone PP08 Universal SFX to ATX Power Supply Adapter Bracket, Black, SST-PP08B : Electronics
TIL there's actually an SFX to ATX PSU adapter : r/Corsair
Buy Corsair SF Series SFX to ATX Adapter Bracket 2.0 | Power Supplies | Scorptec Computers
SF Series™ SFX to ATX Adapter Bracket 2.0
ENERMAX on Twitter: "Small in Size, Big in Power! @ENERMAXGlobal Revolution SFX 650W and 550W include SFX-to-ATX PSU Adapter Bracket! @EnermaxUSA @enermaxjapan https://t.co/LwCRoF7zOa" / Twitter
Buy Corsair SF Series SFX to ATX Adapter Bracket 2.0 [CP-8920204] | PC Case Gear Australia
CORSAIR SFX TO ATX PSU Bracket version 2 for SF450/600 - Deals499
Corsair CP-8920204 cp8920204 Sf Series Sfx Power Supply Atx Power Supply Adapter Bracket 2.0 for $9.68.
FSP 450W Mini ITX Solution/ SFX 12V / Micro ATX 80 Plus Bronze Certified Power Supply (FSP450-50SAC) - Newegg.com
CORSAIR SF Series - SFX to ATX power supply adapter bracket - CP-8920204 - Storage Mounts & Enclosures - CDW.com
SFX to ATX Power Supply Adapter Bracket by Chu - Thingiverse
ATX Power Supply Bracket for MasterBox NR200(P) | Cooler Master
New Unopened, Corsair SFX PSU power supply bracket adapter | Components | Gumtree Australia Whitehorse Area - Box Hill North | 1312405801
SF Series™ SF750 — 750 Watt 80 PLUS® Platinum Certified High Performance SFX PSU
Free STL file SFX to ATX Power Supply Adapter Bracket・3D print model to download・Cults