Description Display Output: RGB 1080p@60fps, MIPI 1080P@60fps, HDMI-compatible 4K@30fps Wireless Network: Built-in 2.4G WIFI+BT module, 2.4G antenna USB Connection: One USB Type-A female, USB OTG Type-C female (on the core board) Audio Circuit: Built-in 3W speaker driver circuit and electret microphone Storage Circuit: The core board has a TF card slot; a WSON8 pad is reserved on the backplane (SPI FLASH supported) Extended Connection: Built-in 30P FPC connector (can connect to Mic R6 microphone board) GPIO Expansion: Via 2 x 20P 2.54mm pads, GPIO and power supply are led out to users Other Features: One WS2812 RGB LED, one reset button Overall Dimensions: 65 mm x 40 mm Color: Black Material: PCB+ metal Package Contents: 1x for RV Dock expansion board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.