Pine Technology PT-730A User Manual page 15

JP17: CPU Fan Power Connector Pin Assignment
1 +12V
2 Ground
3 Ground
12 +5V
This jumper is for the CPU cooling fan power
connection. This connector can only be attached in one
specific way to avoid any crossed signals/shorts.
JP18: Power Good Select
1-2 Internal Power good
2-3 External power good
Most power supplies produce a 'Power Good' signal
which recognizes that the system board is stable enough
to release the power to, however this motherboard also
includes an on-board Power Good circuit for additional
safety.
JP19,JP20: 3.3V / Mixed Mode Cache RAM Select
3.3V Cache RAM
Mixed Mode Cache
RAM
JP19
1-2,3-4,5-6
OFF
This motherboard can support Mixed Mode cache
RAM only. The jumpers will be set accordingly
during production
*** This board cannot support 5V cache
RAM. If you use 5V cache RAM, may
cause damage to the CPU.
15
JP20
OFF
1-2,3-4,5-6