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
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Coolcold K27 Portable Notebook Laptop Cooler USB Air Extracting Cooling Vacuum Fan Radiator - Walmart.com
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Portable Notebook Laptop Cooler USB Cooler Air External Extracting Cooling Fan For Laptop Speed Adjustable for 15 15.6 17 Inch - AliExpress
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Laptop Cooling Pad, Portable Ultra-Slim Quiet Laptop Notebook Cooler Cooling Pad Stand with 2 USB Powered Fans, Fits 12-16 Inches (Blue) - Newegg.ca
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![LIENS Laptop Cooling Pad with Adjustable Height Two 5.1 Inches Fan 2 USB Ports Suitable for 12"-15.6" Laptops(Black) - Walmart.com LIENS Laptop Cooling Pad with Adjustable Height Two 5.1 Inches Fan 2 USB Ports Suitable for 12"-15.6" Laptops(Black) - Walmart.com](https://i5.walmartimages.com/seo/LIENS-Laptop-Cooling-Pad-with-Adjustable-Height-Two-5-1-Inches-Fan-2-USB-Ports-Suitable-for-12-15-6-Laptops-Black_2d0d5fbd-b273-47a2-8c8a-5bbb56a010cd.be46596af804cda767b9fd60a5c34b98.jpeg)