I just bought a affordable laptop cooler pad, it has two USB ports. One is used to extract power from laptop and running the fans, other port I tried to connect keyboard
Notebook Cooling Pad With 4 Port USB 2.0 Hub
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Solved: Are there any risks to connecting a laptop cooler that draws power from the laptop's usb port to the... - Dell Community
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Laptop Cooling Pad with 4 Fans, 2 USB 2.0 Port, Blue LED Lights (Includes 2.1ft USB-A cable) – Blue
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USB Notebook Cooling Pad + 3-Port Hub + 2.5" HDD Dock
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