Introduction: This is a multiplayer Bluetooth controller adapter for 2600 consoles, an open source project based on darthcloud. It uses the popular ESP32 chip. It can support wireless controllers for Switch, for game consoles. For 2600 consoles only. Supports firmware updates Supports button remapping Easy to use web configuration interface Almost zero latency, less than 6ms latency for controllers Compatible with Switch, Switch Lite, Switch OLED, Switch Pro, Switch Joycon, and other wireless controllers (Note: Only official controllers are supported.) Open source project: GitHub - darthcloud/: Multiplayer Bluetooth controller adapter for retro video game consoles LED status Red LED fully lit: Bluetooth failure LED flashing: Searching for wireless controllers Blue LED on: Bluetooth connection successful Button usage Button: Press the button less than 3 seconds (all LEDs are always on): Stop pairing mode / all Bluetooth devices are disconnected. Press the button between 3 seconds and less than 6 seconds (all LEDs flash slowly): Start pairing mode. Press the button between 6 seconds and less than 10 seconds (all LEDs flash quickly): Factory reset the ESP32 to the firmware that came with the device and reset the configuration. Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Color: Black Material: Plastic Package Contents: 1 x Wireless Game Controller Adapter Kit 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 measurement allowed error is +/- 1-3cm.