I need to get some pluggable headers for some AM882H. What size are they?

There's 2 sizes, the power connections are larger than signal. Pluggable headers come in 5.08mm, 5mm, 3.81mm, and 3.5mm sizes and I don't have access to them yet and need to order some ahead of time. They're rather expensive from US parts houses but I can but them from China/Taiwan cheap... if I know the correct size and order early.