![motherboard - How did HP made their power on bottom work with no VSB (standby) on their pro 290 and to make a 24pin ATX psu work with it? - Super User motherboard - How did HP made their power on bottom work with no VSB (standby) on their pro 290 and to make a 24pin ATX psu work with it? - Super User](https://i.stack.imgur.com/cb3lr.png)
motherboard - How did HP made their power on bottom work with no VSB (standby) on their pro 290 and to make a 24pin ATX psu work with it? - Super User
Isn't the power supply supposed to show any sign of life when the power switch on the supply itself is turned on? - Quora
![Amazon.com: SDTC Tech 24-Pin ATX Power Supply Jumper Bridge Tool PSU Test Starter Without Being Plugged Into The Motherboard : Electronics Amazon.com: SDTC Tech 24-Pin ATX Power Supply Jumper Bridge Tool PSU Test Starter Without Being Plugged Into The Motherboard : Electronics](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/51CzpY468eL._AC_UF894,1000_QL80_.jpg)
Amazon.com: SDTC Tech 24-Pin ATX Power Supply Jumper Bridge Tool PSU Test Starter Without Being Plugged Into The Motherboard : Electronics
![A computer tower needing an external power supply. There is nothing behind the power supply "cutout". Basically a laptop motherboard in a case. Also, the card slots aren't removable. : r/techsupportgore A computer tower needing an external power supply. There is nothing behind the power supply "cutout". Basically a laptop motherboard in a case. Also, the card slots aren't removable. : r/techsupportgore](https://i.redd.it/lbrgeb5r4su51.jpg)