Learn how to resolve Wi-Fi and Bluetooth issues caused by wireless interference.
USB 3 devices can create wireless interference that affects Wi-Fi and Bluetooth devices. Powered Usb Hub For Macbook Pro Learn more Others need more power than your Mac can provide. Some devices can be powered by the USB port on your Mac. If your device came with an AC power adapter, use it. Check with the maker of your device, and install all available Apple software updates as well. Some devices need their own software, such as drivers or firmware. Plug the device directly into your Mac instead of a USB hub or other device, and if necessary test with a different USB port on your Mac or device. Test with another cable or adapter, if available. Check all connections: Unplug the device from your Mac, then plug it back in, and make sure that all cables and adapters are securely connected at both ends. Be sure to check the item itself on the retailer page to make sure the spec hasn't changed.If your Mac doesn't recognize a USB device after you plug it into your Mac: So on the models above we've included a list of all the ports included along with technical specifications on read speeds and displays supported so you can be sure you're getting what you want. However, you'll find various manufacturers throwing words like 'adapter', 'hub' and 'dock' around with reckless abandon, often making it difficult to search for something for your exact needs. USB-C hubs (also known as USB-C docks in some parts) are generally geared towards increased performance, faster data transfer speeds and multiple external displays - along with higher Hz support or frames-per-second than USB-C adapters can provide. What's the difference between a USB-C hub and a USB-C adapter? However, if you're looking to dock your MacBook or laptop and run a high definition display through your USB-C adapter, you might want to think about putting some more money on the table for high speed ports, pass-through charging, and cable management. If you're looking to expand ports for USB devices or micro-SD cards and you don't need an ultra-low latency connection a $30 - $40 adapter will easily suffice. 
The right device for you will largely depend on how you plan to use your USB-C hub. While shopping for cheap USB-C adapters, you'll find many hubs and docks offer different things for your cash.
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