@gamemanico
As long as you stay away from Videohelp, I'll help with this one and only post here.
Full size internal drives require the regular 12V power (and connector) like HDDs.
Some/most external slim drives use a Micro SATA connector* whether in a portable enclosure or bare can be powered by USB 3.0 or using a dual USB splitter, two USB 2.0 ports. I have an external slim drive that requires the two USB connectors. It won't work with just a single USB connector even if it's connected to a USB 3.0 port.
*The SATA connector is the same, but the power connector is smaller. It only passes 5V (USB) power. Enough for optical and 2.5" drives.
I use and recommend this SATA to USB adapter:
amazon.com/gp/product/B004HZWVGK/ref=ppx_yo_dt_b_search_asin_title?
e=UTF8&psc=1" target="_blank">https://www.amazon.com/gp/product/B004HZWVGK/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
If you're using it for a full size optical drive or 3.5" HDD, you'll need to connect the 12V DC power adapter. For slim optical drives and 2.5" HDDs/SSDs, you don't need to use the additional power. It's only USB 2.0, but that's fast enough for optical drives.
I use it for various slim drives (Blu-Ray and DVD only). Sometimes, when reading (I never bother to write Blu-Rays), Blu-Rays, I need to connect the external power. I suspect it's because of the higher speed required for Blu-Rays.
That's it.
My only post. Don't know and don't care about how/why things work or don't work. I also won't bother to list the drives I have.
