I just picked up a few of these fysetc panels (LCD800480 V1.1). The important thing to look at is that yes its more like a paneldue 7i in form factor, but the back of the pcb says it is based on the paneldue v3 not the 7i. So once I flashed the board with PanelDue-v3-7.0.bin files everything was as expected now.
in reprap configurator , i haved select high but in config.g is low
; Endstops
M574 X2 S1 P"xstop" ; configure active-high endstop for low end on X via pin xstop
M574 Y2 S1 P"ystop" ; configure active-high endstop for low end on Y via pin ystop
M574 Z2 S1 P"zstop" ; configure active-high endstop for low end on Z via pin zstop