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Inspiron 3650 Dell proprietary 8 pinout
3650 motherboard has one 8 pin ATX and one 4 pin cpu power socket.
Inspiron 3650 psu is interchangeable with optiplex 3040. evidence below.
Dell Inspiron 3650 Optiplex 3040 5040 7040 240W Power Supply AC240NM 0706M THRJK https://www.newegg.com/p/1HU-005J-00M57
optiplex 3040/3020/7020/9020 use same 8 pinout. off the shelf 24-to-8 pin adapter is applicable to all these models. https://www.amazon.com/COMeap-Adapter-Compatible-Optiplex-Precision/dp/B06XGWRTHC
Therefore Inspiron 3650 8-pin pinout is identical to Optiplex 3040/3020/9020.
| 1 | 12V Stand By | Purple |
| 2 | GND | Black |
| 3 | GND | Black |
| 4 | 5V/PWR_OK | Gray |
| 5 | 12V | White |
| 6 | 12V | White |
| 7 | Blank | |
| 8 | 5V/PS_ON | Green |
24 pin DIY mod
- 2 yellow wires (24 pin) –> 2 white wires (8 pin)
- 3 black wires (24 pin) –> 3 black wires (8 pin)
- 1 grey wire (24 pin) –> 1 grey wire (8 pin)
- 1 yellow wires (24 pin) –> 1 purple wire (8 pin)
- Short green and black wire (24 pins)
off the shelf adapter
redxps630
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January 15th, 2021 08:00
To upgrade Dell OEM psu for Inspiron 3650, consider SFX psu that fits inside case (such as Corsair SF600) and off the shelf 24-to-8 pin adapter (active from comeap or passive from moddiy). This has been successfully done by user. https://www.dell.com/community/Inspiron-Desktops/Inspiron-3650-upgrading-cooling-capacity/m-p/6233021#M9373
SF600 https://www.corsair.com/us/en/Categories/Products/Power-Supply-Units/SF-Series™-80-PLUS-Gold-Power-Supplies/p/CP-9020105-NA#tab-tech-specs