Also believe the S9 has a little stronger power supply, so that may be why your's worked.Might be the case for electric motors, or the 'gas' required per mile in a car, but Not in the case of data speed through any type of conveyance.
It's been covered many times previously in this forum, and others, use an externally powered USB drive and all is well with the openbox receivers. Some USB powered do work, but it's a hit and miss search.
Also, if it's a larger drive, make sure it doesn't have a burnt in hardware second partition with windoze backup software. Single partition only.
O.K.... I just plugged the hard drive I use for my s9 into the s10. It works perfectly. See pic
Might be the case for electric motors, or the 'gas' required per mile in a car, but Not in the case of data speed through any type of conveyance.
I am an electrician among many things, one thing that is a fact, it takes more power W or different harmonics to get the magnetic flux needed to spin a motor faster. Maybe I should have said slower speed = less demand for power. Higher speed = higher demand for power. But I think you missed my point.
If I have the capacity to push 500 psi of water through a pipe that can handle 600psi you will still only have 500psi.
BUT... If I have the capacity to push 500 psi of water through a pipe that can handle 400psi you can only have 400psi.
As far as data writing and reading, a hard drive has a normal operating speed and they don't get up to that speed instantaneously. It takes several seconds for a hard drive to spin up or down. There are two exceptions to this that I can think of but it applies to a pc only. This is the more basic reason that data speed does not apply as the hard drive that is already at its normal or top speed doesn't need to go much faster if at all to transfer data.
It does require more power however to operate at usb 3.1 than it does 1.0. By allot. So what I am saying is it seems to me if I bought a hdd capable of high "data speeds" but matched it up with a 1.0 external case it could not draw the power of the demands of 3.0, therefore it also would not be capable of the hdd data speeds as it would be limited or bottlenecked by the hdd to usb interface built into the case. As the old saying goes, you are only as fast as your slowest component.
I think that the usb ports on stbs aren't always capable of the power requirements of the 3.0 and higher capable hdd thus the need for external power. I could use a usb thumb drive yes. But then I am quite limited to record time.