The car charger in question is compatible with the Xiaomi Poco X6 Pro, as it has both USB-A and USB-C sockets, so will charge most devices, including Xiaomi's. However, I don't have any specific information on compatibility with the Poco X6 Pro in particular. It's generally a good idea to check the charger's specification to make sure it supports 67W fast charging, although the Poco X6 Pro does support 67W fast charging.