I have two drives both containing a Windows 10 operating system and applications which I use to effectively create two completely independent "machines" on the same PC that are used for different tasks. One is a conventional 3.5 inch HDD, the other is a 2.5 inch SSD. Only one is ever connected at a time and I've been simply swapping a SATA power cable between the two to choose the one which boots. I'm looking at a more elegant solution involving the icy dock mb971sp-b caddy which provides slots for both a 3.5 inch HDD and a 2.5 inch SSD and individual power buttons. My question is regarding whether or not the power buttons are the mechanical latching types that physically connect or disconnect the voltage to each drive, rather than "soft" power switching that relies on internal electronics. As I'd need to set the power button state before switching on, a mechanical latching power switch would be essential in this instance so that only the desired active drive is powered on startup. If anyone can confirm the above and validate that my thinking is sound regarding this kind of dual boot scenario, then that would be most appreciated.