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). :
SFX to ATX PSU Adapter Bracket
Amazon.com: Corsair SF Series SFX to ATX Adapter Bracket 2.0, CP-8920204 ( Bracket 2.0) : Electronics
Desktop Atx Power Supply Baffle Computer Small Chassis Sfx Power To Atx Bracket Matx Conversion Frame Black Silver - Pc Hardware Cables & Adapters - AliExpress
Corsair SF600 Platinum PSU Review: Setting The SFX Performance Bar Higher - Tom's Hardware | Tom's Hardware
Kingwin SFX to ATX Power Supply Adapter Bracket - Micro Center
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
SFX to ATX Power Supply Adapter Bracket by Chu - Thingiverse
Corsair SF750 80 PLUS Platinum SFX 750W Power Supply Review (Updated 2023) | Gaming Gorilla
Guess who forgot the atx to sfx adapter.... First sffpc : r/sffpc
Node 304 with SFX PSU (ATX adapter bracket) - Power Supplies - Linus Tech Tips
Corsair SF600 SFX PSU Preview | Glob3trotters
Corsair SF750 SFX PSU Review - Latest In Tech
Fractal Design Nano S with an SFX PSU - Power Supplies - Linus Tech Tips
Amazon.com: Silverstone PP08 Universal SFX to ATX Power Supply Adapter Bracket, Black, SST-PP08B : Electronics
Buy Corsair SF Series SFX to ATX Adapter Bracket 2.0 [CP-8920204] | PC Case Gear Australia
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Corsair CP-8920204 cp8920204 Sf Series Sfx Power Supply Atx Power Supply Adapter Bracket 2.0 for $9.68.
Silverstone PP08 Universal SFX to ATX Power Supply Adapter Bracket, Black, SST-PP08B : Electronics - Amazon.com
Corsair SF600 SFX PSU Preview | Glob3trotters
Thermaltake Toughpower SFX Gold 600W Power Supply Unit-Universal Compact Design for All Mainstream PC Cases – SFX to ATX PSU Adapter Bracket - EnosTech.com
Kingwin SFX to ATX Power Supply Adapter Bracket - Micro Center
SF Series™ SFX to ATX Adapter Bracket 2.0
New Unopened, Corsair SFX PSU power supply bracket adapter | Components | Gumtree Australia Whitehorse Area - Box Hill North | 1310953623
Corsair SF Series 600W Power Supply Review - PC Perspective
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