alt Hacker NewsOn the newer pixel phones (starting with the ones containing the titan chip) you can also mux the SBU pins to the security chip USB interface with "fastboot oem citadel suzyq".
And BTW, the SuzyQ cable is nothing more then two pull up resistors and a USB hub connected to the normal usb D+/D- pins on one port and the SBU pins on the 2nd port. Nothing fancy about it, people have even made their own (minus the hub) by soldering some wires and resistors to a usb-c breakout board. Google has also published the schematics for it:
https://www.chromium.org/chromium-os/ccd/951-00273-01_201806...
Been wanting to play with the citadel interface. Last time I looked at it there was 0 public information, but that was years ago. And if there still isn't, then it'll be a good excuse to RE
Also, the titan chip has been around since the Pixel 3 I believe, so "newer" might be a strong word :)