The 8 Best USB to HDMI Adapters
We spent 28 hours on research, videography, and editing, to review the top options for this wiki. Whether using Type-A or C connectors, USB offers plenty of versatility when it comes to display options. The right active chipset can transmit an Ultra HD picture over the older plug style, while several types of hub and passive adapter can turn the newer connection type into an HDMI plug, thanks to Alternate Mode technology, while also providing a range of additional features. When users buy our independently chosen editorial picks, we may earn commissions to support our work. Skip to the best usb to hdmi adapter on Amazon.
May 16, 2019:
There's more than one way to turn a USB port into a video output. If you're limited to Type-A ports, look for a product that uses a DisplayLink chipset. Plugable makes some of the best ones; in fact, they actually make most of them, according to DisplayLink's website. In effect, these are external graphics adapters that work with a set of software instructions that you install in Windows. They use your PC's general hardware to encode, transmit via USB, and decode into an HDMI cable the signal that your actual GPU would normally deal with. One of the consequences of these is that they can cause CPU load increases. These increases can be minor, significant, or in some cases, major. Also, they do require a certain level of GPU, CPU, and RAM. But overall, it's a very interesting technology, and it's available for Type-A as well as Type-C ports.
If your device has Type-C ports and supports what's called DisplayPort Alt Mode, you have considerably more options than those limited to Type-A and non-DP Alt Mode connectors. DisplayPort is a little bit confusing in that it's the name of both a plug format and transmission format (shocking, we known, that anything related to connector and transmission methods would have a confusing naming convention). A lot of newer Windows PCs have USB-C ports with DP Alt Mode capability, as do most MacBooks, and some smartphones. If your device has that, and your display uses an HDMI 2.0 input, you're in luck; you can get the full glory of a 4K resolution at a smooth 60 hertz using the simplest of these adapters, which would be the Uni. Uni also makes a cable that's basically identical to the adapter, except that it's long and ends in a male plug. Alternately, the Lention Hub is an excellent choice if you'll be using any other devices or trying to charge via that same USB-C plug while using the video output. Finally, if you have the famed Thunderbolt 3 connector, check out the CalDigit Mini Dock, which is small enough to fall into the poorly defined adapter class, yet full-featured enough to pass for a dock, though it doesn't allow for charging pass-through of any type.