Hello,
It is not allowed by the USB standard to charge through the Type-A connector.
The Dell D3100 complies to USB standard.
You will not find any USB device which will charge a laptop through a Type-A connector.
Only Type-C introduced support for charging, and requires specialized circuitry in both the device and computer.
The Dell D6000 does charging when USB with Type-C connector with computers supporting USB Power Delivery.
Kind regards,
Alban
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