I bought an external DVD drive, because the notebook is only a USB interface, read DVD discs sometimes say that power can not read the disc, there is an interface and the previous radio direct charge power adjustable 3 to 12 volts, I do not know it? Is it negative or positive?
External optical drive generally use the USB interface data cable power on it. CD-ROM drive at the back of an external power supply jack is DC 5V is the middle of the cathode. Use the power adapter to choose 500mA is enough, the phone's charger are easy to use, but you need to need a transfer cable, the local computer city to buy.
You can use the 12-24 volts are generally filled with the best you are engaged in a similar original care of the problem burned out of the external does not matter, be careful in the computer
Generally have a power interface above are marked with a few volts input and there will be a special charger = = If you do not have to confirm that in the end is not the power interface. It is not recommended to use any other adapter because of what may be caused by short circuit. But would like to try the words USB is 5V I guess it is also 5V
