I'm planning to connect some old SSD what I've already to my RasPi3B. I ordered cheap SATA-USB adapter cable from ebay. It has two USB-a plugs, one is for data and power another is only for power.
Can I plug this power plug to USB charger and other to RasPi?
I quess it will also try power RasPi's USB connectors via adapter, is it bad?
Adapter I ordered