No current Roku offers analog video/audio outputs. The last one that did was the Roku Express+ (3910) that was released in 2017. Some users have been successful using an HDMI to analog converter, but others have had issues with them. The major issue is probably no current Roku supports a 4x3 screen. They are all expecting a 16x9 widescreen display.
Not certain why you mentioned a USB connection, but I've never seen any streaming device that was capable out sending video out a USB port. The occasional Roku that did have a USB port (such as the Ultra) can only use it for watching media from an external USB drive.
Dan
Roku Stick (3600), Ultra (4640), Ultra (4670), Ultra (4800), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.
