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What is the difference between a usb splitter with power supply and one without?
Powered USB is an OTG cable that can be connected to an external power supply to power devices connected to OTG
Powered USB is an OTG cable that can be connected to an external power supply to power devices connected to OTG; this is mainly used for mobile phones or tablets to read high-current devices, such as mobile hard drives. Generally, mobile phones and tablets cannot provide the high current required by mobile hard drives. At this time An external power supply is required to power the mobile power supply. In this case, the OTG without power supply cannot read the mobile hard disk. USB, the abbreviation of Universal Serial Bus in English, is an external bus standard used to standardize the connection and communication between computers and external devices.
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