something could be wrong off the bat: Intel i5--3550 is incompatible w 9020. 9020 has LGA 1150 cpu socket which only use intel 4th gen cpu such as i5-4570. Optiplex 7010 on the other hand can run 3550 because it has LGA 1155 socket.
NB: if you try to put a 3550 in 9020 you could potentially damage the cpu socket and brick the board.
based on your pic your psu has a 24 pin atx connector directly plugged in the motherboard. If so, that cannot be a 9020 board because 9020 uses proprietary 8 pin connector, not 24 pin. Look at motherboard DP/N and google. you may have an older optiplex board. actually I suspect you may have a 7010 board since 9020 does not have a white sata port next to black.blue port.
redxps630
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March 14th, 2023 20:00
something could be wrong off the bat: Intel i5--3550 is incompatible w 9020. 9020 has LGA 1150 cpu socket which only use intel 4th gen cpu such as i5-4570. Optiplex 7010 on the other hand can run 3550 because it has LGA 1155 socket.
NB: if you try to put a 3550 in 9020 you could potentially damage the cpu socket and brick the board.
based on your pic your psu has a 24 pin atx connector directly plugged in the motherboard. If so, that cannot be a 9020 board because 9020 uses proprietary 8 pin connector, not 24 pin. Look at motherboard DP/N and google. you may have an older optiplex board. actually I suspect you may have a 7010 board since 9020 does not have a white sata port next to black.blue port.