How do I increase the power to the USB ports on a multimedia keyboard with 2 USB 2.0 ports?
What JonSnell says is true. When an USB port on a computer can deliver 5 volt, it is limited to 500 mA or 0,5A. Not every port on every computer will be able to deliver power. It is dependent on how the manufacturer has made the computer. When a Laptop with 4 USB ports, will be used to charge your equipment it should drain 2 A and would empty the battery very quick. So better not try to use a laptop for that.
A driver is meant, for the computer to make it possible to communicate with the hardware you connect. Communication is one thing, completely separated from the possible power a port can deliver.
There will be no driver, that can change the maximum output on the USB port, because the computer hardware will limit it on the 500 mA. Even on a desktop PC. So most modern smart phones or tablets need more power than a PC can deliver.
To charge them, you better use a charger, or if you want to sync and charge the battery in the same time, buy a USB hub with an external power supply. Be aware, most power supplies only can deliver 2 A, so don't put more devices to charge then the 2 ampere the power supply can deliver, or you will get the same message.
Feb 23, 2015 |
Dell PC Laptops