Figure 3.2 shows the front panel of the ATX enclosure that provides:
power on-off button and indicator
USB Config port connector (USB CFG)
Config switch and indicator (FPGA and PLD configuration)
Soft Reset switch
Hard Reset switch
Compact Flash interface connector
USB OTG interface connector
MMC and SD memory card interface connector
User switches 1 to 8
User LEDs 1 to 8
SIM Card interface
5¼ bay (for customer hardware expansion).
The power button on the front panel is typically used to power on the system.
If a link is placed across J41 (FORCE ON), the power is forced on and the Power push button has no effect.
A jumper must not be placed across connector J40 (POWER). You can, however, use this connector to attach an external push button if the Power push button is not accessible or the board is mounted in the enclosure.