I’m unable to find current ratings for the SATA port on TK1. Kindly let me know if you have this information.
By ratings, do you mean if it is SATA 2, so on? Looking at a specific hard drive seems to be easier; looking at just the controller you might try this:
dmesg | grep -i sata
I’m looking for power ratings in Amps, Watts etc. for the SATA power port on TK1 (4 pin molex white colored port next to the soft power)
The power connector is 1x4 HDD power connector (ATX type), you could check the SATA section of Jetson TK1 DevKit Specification from below link:
Also could see more expansion connectors information from it.