A circuit comprising: a first field-effect transistor, FET, pair coupled to a single power output; a second FET pair coupled to the single power output; and a controller coupled to the first FET pair and the second FET pair, wherein the controller is adapted to: detect that a first power supply and a second power supply are respectively coupled to the single power output via the first and second FET pairs, thereby forming a first and second power path; characterised in that the controller is further adapted to: identify whether a voltage drop is lowest across either the first power path or the second power path; switch the first power supply to the single power output, to supply power to a computing device from the first power supply, using the first FET pair, in response to identifying that the voltage drop is lowest across the first power path; and switch the second power supply to the single power output, to supply power to the computing device from the second power supply, using the second FET pair, in response to identifying that the voltage drop is lowest across the second power path. a first field-effect transistor, FET, pair coupled to a single power output; a second FET pair coupled to the single power output; and a controller coupled to the first FET pair and the second FET pair, wherein the controller is adapted to: detect that a first power supply and a second power supply are respectively coupled to the single power output via the first and second FET pairs, thereby forming a first and second power path; characterised in that the controller is further adapted to: identify whether a voltage drop is lowest across either the first power path or the second power path; switch the first power supply to the single power output, to supply power to a computing device from the first power supply, using the first FET pair, in response to identifying that the voltage drop is lowest across the first power path; and switch the second power supply to the single power output, to supply power to the computing device from the second power supply, using the second FET pair, in response to identifying that the voltage drop is lowest across the second power path. detect that a first power supply and a second power supply are respectively coupled to the single power output via the first and second FET pairs, thereby forming a first and second power path; characterised in that the controller is further adapted to: identify whether a voltage drop is lowest across either the first power path or the second power path; switch the first power supply to the single power output, to supply power to a computing device from the first power supply, using the first FET pair, in response to identifying that the voltage drop is lowest across the first power path; and switch the second power supply to the single power output, to supply power to the computing device from the second power supply, using the second FET pair, in response to identifying that the voltage drop is lowest across the second power path. identify whether a voltage drop is lowest across either the first power path or the second power path; switch the first power supply to the single power output, to supply power to a computing device from the first power supply, using the first FET pair, in response to identifying that the voltage drop is lowest across the first power path; and switch the second power supply to the single power output, to supply power to the computing device from the second power supply, using the second FET pair, in response to identifying that the voltage drop is lowest across the second power path.