The primary device (we have ~250 of these in production running on the 8.6.x firmware) is a multicolored tower light, which is used in manufacturing. Specifically the USB56LB model.
https://www.signaworks.com/products/tower-lights/usb-interface-led-tower-lights.html
The other device is a USB bluetooth adapter, which I do not currently have the model information for.
I’ve also worked with Dell tech support to attempt manual override of the USB passthrough using the device ID with no success.