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# 1. Power Jack and Connectors
# 3. How to connector external power switch
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[[File:X708-fn.jpg|none]]
{| class="wikitable"
| Power input || 5Vdc +/- 5% , ≥3A
* Don't power the Raspberry Pi via the Pi's type-C USB socket
* X708 can be powered via the onboard DC jack or Type-C USB power socket
2. 6-Pin Function Header
{| class="wikitable"
|}
{| class="wikitable"
! Pin No. !! Pin Description
! 4
| LED+ for power on, rebooting and shutdown
|}
4. Power button (Script for power mgnt installed)
{| class="wikitable"
! Press and Release !! Raspberry Pi and X708 turn on
|-
! Press and hold for 1~2 seconds
| System rebooting
|-
! Press and hold for 3~7 seconds
| System shutting down
|-
! Press and hold for >8 seconds
| Force shutdown
|}
5. Function LEDs
{| class="wikitable"
! LED Name !! Usage
|-
! BAT
|-
! LOW
| LED red on indicates battery low (≤3.0Vdc) or
|-
! blue power button pressed
|-
! (Jumper for ASD inserted)
|-
! 5V
|-
! OUT
| LED green on flashing indicates 5V power out
|-
! and UPS powered by battery
|-
! AC
|-
! FAIL
| LED red on indicates AC power loss or PSU
|-
! failure or PSU disconnected
|-
! PWR
| LED blue indicates
|-
! Stays on - Power on
|-
! Blinks rapidly - system rebooting
|-
! Blinks slowly - Shutting down
|}
6. Fuel gauge - LED Indicator
Operation of Discharging
{| class="wikitable"
! Capacity C (%) !! D1 !! D2 !! D3 !! D4
|-
| C ≥75% || ON || ON || ON || ON
|-
| 50%≤C＜75% || ON || ON || ON || OFF
|-
| 25%≤C＜50% || ON || ON || OFF || OFF
|-
| 3%≤C＜25% || ON || OFF || OFF || OFF
|-
| 0%＜C＜3% || Flashing || OFF || OFF || OFF
|}
Operation of charging
{| class="wikitable"
! Capacity C (%) !! D1 !! D2 !! D3 !! D4
|-
| Fully charged || ON || ON || ON || ON
|-
| 75%≤C || ON || ON || ON || Flashing
|-
| 50%≤C＜75% || ON || ON || Flashing || OFF
|-
| 25%≤C＜50% || ON || Flashing || OFF || OFF
|-
| C＜25% || Flashing || OFF || OFF || OFF
|}
7. Pins and GPIO used
{| class="wikitable"
! Pin No. !! Usage
|-
! 2, 4
| +5V power supply
|-
! 3, 5
| I2C for RTC and battery fuel-gauge systems
|-
! 6
| Ground
|-
! 29
| GPIO5 for power management
|-
! 32
| GPIO12 for power management
|-
! 33
| GPIO13 for power management
|-
! 31
| GPIO6 for AC power loss detection
|-
! (Jumper for PLD inserted, High=power loss,
|-
! Low=Power supply normal)
|}