Help getting started with Roku devices, including setup, connecting your device to your TV, linking a Roku device to your account at my.roku.com/link, adding channels, subscribing to services, and more.
According to the Roku Wikipedia page, even the old MHL Sticks support the Wi-Fi Direct remotes. However, if it is an MHL stick then it will only work with a TV with an MHL input. It looks like an HDMI port, but isn't. But I agree with Jeff that you're probably better off with the latest model Stick than an old MHL version.
Dan Roku Stick (3600), Ultra (4640), Ultra (4670), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.