Smartphones usually have limited output power for OTG devices. Moreover, there is a lot of interference in the smartphone, so feeding from a smartphone is not the most ideal.
With the CB19C, dongles can be powered from a clean source, such as a power bank, instead of your smartphone.
Your dongle receives high-quality power with minimal interference from the CB19C, while at the same time preventing your smartphone’s battery from draining and ensuring optimal performance from both your phone and the dongle.
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