The Roku Ultra HDR 4K UHD Streaming Media Player is one of the best selling media players in the world. Once plugged into your display’s HDMI port, the Roku Ultra will connect to the internet via its built-in Wi-Fi or Ethernet connectivity and is controllable via the included remote control, the free Roku app for Android and iOS. Roku Ultra has one MicroSD card slot, can support Micro SD cards. Below are recommended memory cards for Roku Ultra: