TC_121.pdf On page 4, there is an "IDE Power" connector. It looks a lot like a 4 pin CPU fan connector, but it ... The cable is meant to be powered by the female SATA connector you see ...

I ended up getting a low-profile SATA to eSATA adapter & cable from Amazon for an IBM server I was refurbishing and putting the boot disk (in my case a spare 2.5 laptop drive) into an eSATA case ...