I'm looking to purchase an (USB) adapter for WiDi/Miracast use. How can I (before purchase) determine if a WiFi adapter supports wireless display/Miracast?

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3 Answers

WIDI support related to graphical card support, not wifi adapter Miracast has also nothing to do with CPU, it's a feature in modern wireless WiFi Direct network adapters (list of WLAN adapters supporting Miracast). Additionally, the display adapter must support Windows Display Driver Model (WDDM) (almost all modern display drivers support it).

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I've been looking all over the place for a USB WIFI adapter that supports WiDi / Miracast. I suspect that many or most of the newer models support it, but I haven't been able to find confirmation on any of them until now. I just found this post on the TP-Link forum from 2020-12-29 which gives a list of adapters that support Miracast. Hopefully someone else will find this helpful! Here's the list:

• Archer T2U Nano
• Archer T2U Plus
• Archer T2U v3.0
• Archer T9UH
• Archer T4UHP
• Archer T4U
• Archer T4UH
• TL-WN823N v3.0
• Archer TX3000E
• Archer TX50E

If you want to send out your screen image over WIDI, you don't want a WIFI dongle, instead there are WIDI dongles which attach to your HDMI output and get power over a USB cord. Have a look at the Microsoft Wireless Display adapter for an example. At the least you're looking at around $30 for a generic Miracast dongle, but a WIFI dongle alone won't get the video signal to transmit it to a remote display.

Certain laptop motherboards (usually ones which are built with a mostly-Intel chipset) have internal WIDI since they can route the video from the internal video to the WIDI chips, but these are kind of rare.

Hope this helps!

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