At the default orientation, the power cable is on the LEFT side when viewed from the front, in your case you may attached the stand wrongly, please turn your stand 180degree and attach it.
If you really need to have your power cable on the RIGHT side when viewed from the front, you can also do it in an easier way.
Plug in a USB mouse, then settings, advanced WIFI connection. It will open an android WIFI settings menu. click back (top left corner), then Display> Advanced> Display Rotation>
Change it to 270degree (90degree to default orientation)
Then press YES ( the button on the right side) to restart the device.
Note: the D-pad button will be inverted in this case