Razer Ripsaw HD - Passthrough Output No Signal

Hi Team, I recently purchased a Ripsaw HD from Razer eBay AU. It detects fine in OBS and I am able to view the video and audio stream from a Nintendo Switch in OBS preview. There is no passthrough signal from the output HDMI port however, I am using the included Razer HDMI cable for the output but it does not seem to passthrough a video signal. I've tried different HDMI cables, a different screens, plugging in the included USB cable first, plugging in the HDMI cables first, nothing seems to enable HDMI passthrough output from the Ripsaw HD. Main PC Specs: AMD 3950X RTX 2080 Ti Windows 10 Pro Synapse 3 updated. (Does not display as an attached device in Synapse 3) Latest OBS release 27.1.3 Nvidia display drivers updated. Also tested on a Razer Blade 14 (whilst charger is connected) in case it was related to the PC above: AMD 5900HX RTX 3080 Windows 10 Synpase 3 updated. (Does display as an attached device in Synapse 3) Latest OBS release 27.1.3 Nvidia display drivers updated. Screens tested: TCL X925 65" TV HDMI 2.1 port LG CX 65" TV HDMI 2.1 port BenQ XL2420Z Monitor HDMI1.4 port Screencap of working OBS preview: https://imgur.com/seX7gbr Any advice that you could provide is greatly appreciated. Whilst my usecase is to simply play using the preview window so that I may screenshare with friends on Discord, I do want to ensure that the unit is working appropriately, thanks in advance.