realme TV stick supports being connected to a USB drive to transfer files through the OTG cable.
If you need to connect the USB drive to realme TV stick, please prepare a data cable that supports the power supply and data transmission of the TV stick at the same time. Please refer to the connection method shown in the following picture.
OTG cable and connection method
How to browse a USB drive on the TV stick？
Step 1: Refer to the connection method to connect the USB drive to the TV stick
Step 2: Insert the TV stick into the HDMI port of the TV and the TV prompts "Checking USB drive"
Step 3: Check if there are any file manager Apps installed on the TV stick.
If yes, you can browse the USB drive directly through the file manager App.
If not, you can refer to How to install an App on the realme 4K Smart Google TV Stick? to download a file manager through Google play.