https://www.win-raid.com/t4287f16-GUIDE-The-Beginners-Guide-to-Using-a-CH-A-SPI-Programmer-Flasher-With-Pictures.html

Nice article in general, but it also says:
"Note: If you are flashing an AMD motherboard, you need to put the 1.8V adapter into the SPI, and then put the clip assembly onto that."

So is this right? 3.3v for Intel, 1.8v for AMD?