New Transducers TR-5001 - Manual (Page 32)

JP7: LCD PANEL Power Selection
JP7 can be used to select the Panel LCD supple power: +3.3V or +5V.
The default setting is on +3.3V.User need to check the LCD panel spec
and adjust this jumper and make Panel work in specified power rail.
+3.3V +5V
JP8~ 9: On-Board LAN Enable/Disable selection
On-Board Fast Ethernet LAN chips can be disabled by shorting the JP8
or/and JP9 jumper.
Port # Enable Disable
PORT 1
JP8 JP8
PORT 2
JP9 JP9
28 TR-5001 User Manual