What should I do?A generic PSU can end up costing alot in the end.
Bios has absolutely nothing to do with psu. All a psu does is supply power.
I have never heard of this and I use to work for Dell. Some of their units(mainly small form factors) do use proprietary PSU connectors and those require an adapter but it should not affect the way the system operates.Not from what I'm told, and particularly on a Dell Optiplex 3020 that supposedly "requires" their proprietary PSU. Using a third party PSU does not allow the mobo to automatically restart and it seems that also prevents the BIOS from being updated, possibly a missing status connection when using the adapter... but I will be able to prove / disprove this theory later today when the standard PSU arrives. I mistakenly recycled to old original.
I have never heard of this and I use to work for Dell. Some of their units(mainly small form factors) do use proprietary PSU connectors and those require an adapter but it should not affect the way the system operates.
Here's the adapter needed for an Optiplex 3020
https://www.amazon.com/Must-Have-Gadgets-Optiplex-Precision/dp/B01G84VCMG/