Okay brief update, I figured out that the old HDD I wanted to install is nevertheless too big. It looks like the new Medion case only accepts 2,5" and not 3,5". My old HDD (Seagate Barracuda 3,5") requires both data connection via SATA plus a power cable to run. I'm however still not understanding how I could draw power from the PSU to an extra HDD. Through an open slot I can only just catch a glimpse of the PSU hidden behind a metal enclosure inside the case. I can spot that it seems there are power outputs (written is something like "SATA, peripherals" etc.) but I haven't the slightest clue how to actually open up the PSU enclosure to be able to reach those outputs. If I were to buy a 2,5 SATA SSD, would it also need both SATA cable for data transfer plus power cable? Again, sorry for my ignorance here. edit: here's how the enclosure is looking. The outputs are way too deep in there for me to be able to reach them. Edit 2: okay so I figured out it's possible to remove the panel on the right side of the computer. This give better access to the PSU. I see there are some cables there sticking out, one of them looks like a SATA power cable (15 pin flat shape). Would this be the correct one to use to power an extra HDD?
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