RetroScaler PS2/PS1 Mini Wireless Controller Adapter – Supports PS2/PS1 Game Console, Compatible with PS3/PS4/PS5, Xbox One S, Series X/S, Switch Pro Bluetooth Controllers

Suitable for PS1/PS2 game console, compatible with PS3 / PS4 / PS5 / Xbox One S / Xbox Series X&S / Wii / Wii U Pro / Switch Pro / Switch Joycon / 8bitdo / Retro-Bit wireless controller, etc.
A mini PS1/PS2 Blueretro adapter can only be connected to one wireless controller at a time. (note: can't support the game Call of Duty 2 /3 for now and doesn't compatible with 2.4g wireless controllers.)
Millisecond response with almost no delay, the PS4&PS5 controller using Blueretro has a delay of less than 6 milliseconds. The button mapping settings can be configured through Web Bluetooth pages. (Nothing need to be installed beside having a Google Chrome based browser.)
About the Firmware Upgrade, you can press and hold the PAIR button before connecting the Blueretro adapter to the PC with a USB cable. If the PC cannot recognize the adapter, please try to install the CH340 driver in the PC.
The power supply to some older PS1/PS2 host controller interfaces may not work properly for some reason, causing the Mini PS1/PS2 Blueretro converter to not work. In this case, you can use the micro USB port to power the Mini PS1/PS2 Blueretro.