j5create ScreenCast 4K Wireless Adapter Screen Cast from Mobile Phone, Tablet, or Laptop Support for AirPlay, Miracast & Chromecast Mirror Extend for Windows & macOS Wireless Screen Display (JVAW76)

This product description is a lie. Its description is Screencast 4K, the box says "Supports 4K Ultra HD ar 30 Hz", and the website states "Stunning 4K Picture Quality, Enjoy a crystal clear resolution up to 4K and lifelike colors optimized for your TV.", but its all a lie. Having purchased this for one of our meeting rooms, I confirmed that when plugged into the tv, it said 4K 30p. When connecting to the dongle, Windows 11 would only allow a resolution up to 1080p. Having updated the device, and finding nothing to resolve it, i contacted the manufacturer's support. Their response:-"Due to the limitation of Miracast 1.0 that JVAW76 complies with, the output resolution of source device will be limited to 1080p, 720p and 480p. The JVAW76 will upscale the source resolution up to 4K with 4K display."This device is using a standard that was first ratified in 2012!. In July 2017, 2.1 was ratified, which does support 4K, however J5Create think its reasonable to claim a product can stream 4K, when its only capable of streaming at 1080p, and upscaling to 4k. Massive con in my opinion, and I will steer clear of any of their products in future.