I have a PCIE to sata card that supports 8 drives. I had 5 installed on the card that all worked fine. I bought 3 new drives but they aren't being detected. I've tried changed cables with no effect. I've tried adding one at a time, nothing. I'm only seeing the original 5 no matter what I do. I thought maybe unplugging and old one and trying a new one could potentially let me know if I had too many, but then only the 4 drives showed up. They don't show up with fdisk -l, the don't show up in disks or gparted. I tried a USB enclosure to initialize them to see if that would help, and they did initialize, but once connected back to SATA, they don't show up. I'm just really at a loss of what's going on at this point. Below is the link to my previous post that I made trying to fix this issue. OS is Ubuntu 22.04
https://www.reddit.com/r/Ubuntu/comments/1cz2jlb/new_hard_drive_not_showing_up/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button
Edit
Issue solved below, TLDR: I needed an adapter power cable (which came in the box but looked like just an extension)