There has been no specific discussion about mouses, but more generally it is not possible to connect USB peripherals to the dingoo "as is".
The idea is that the USB protocol is an asymetric protocol: there is a host device on one side, and peripheral devices on the other side. Unfortunately, the configuration is not only software: the hardware must provide USB host capability in order to be able to connect peripherals. In particular, it must be able to provide 5V power to the peripherals, because most peripherals (including all mouses) are not self-alimented.
The dingoo doesn't have this hardware configuration, so any attempt to use peripherals would first need to modify the hardware. I remember someone saying this would be possible, but AFAIK nobody has ever done it.