It looks like USB would work ... Ethernet connection as well.
Plug in an Ethernet cable ...
From Oppo:
https://www.oppodigital.com/blu-ray-udp-205/
Use the Squarish USB A to B Input to connect USB.
Plug in an Ethernet cable ...
From Oppo:
- Media File Playback
The UDP-205 is equipped with two USB 3.0 ports on the back and another USB port on the front. Users can play video, music and photos from USB hard drives or thumb drives.
- Home Network Access
Built-in 802.11ac Wi-Fi or Gigabit Ethernet connects the UDP-205 to users’ home networks, so users can easily play media files stored on computers and home servers.
https://www.oppodigital.com/blu-ray-udp-205/
Use the Squarish USB A to B Input to connect USB.