Based on the context of "r20xcusb," it is highly likely you are referring to the (or similar models in the Roland "R" series like the R-07 or R-05) portable audio recorder, where users often search for the USB driver or connection software. The string "r20xcusb" is likely a truncated or auto-complete search query for "R-20 USB Connection" or the specific driver file name.
Since these devices are manufactured by various OEM suppliers, the configuration utility is often provided via a mini-CD or a download link from the seller. If you are missing the software, searching for or "ID/IC Card Reader Output Toggle Tool" usually yields the necessary .exe utility. Integration for Developers r20xcusb software
Expanding channels with ADAT: