30pin and 12pin Header Sockets    (Hardkernel G145257827525)

30pin header socket and 12pin header socket are for the ODROID-XU4. 
It is useful when you make your own shield for the ODROID-XU4. 
The XU4 Shifter Shield uses the exactly same header sockets 

Height is 16mm with 2.0mm pitch.

Header Socket Detail