If you’ve ever worked with DFRobot parts, you might’ve seen JST-PH 4-pin (or 3-pin) connectors on their boards, too – they’re from their ecosystem called Gravity.

On page 4, there is an "IDE Power" connector. It looks a lot like a 4 pin CPU fan connector, but it (obviously) provides different voltages that are appropriate for 3.5" IDE drives (5V, 12V) and ...