User Instructions

Back (Red)
Component
Purpose
1
VIN
5-12V power input, supports Power-Over-Ethernet via M2X Extension
2
Micro-SD Slot
Molex Slot, spec version 2.x/3.x/4.x (SDSC/SDHC/SDXC)
3
Current Limit Switch
Prevents damage to VIM3 due to faulty loading conditions
4
M.2 Slot
PCIe 2.0 (x1 lane), supports M.2 2280 NVMe SSDs
5
TP
10-pin 0.5mm pitch FPC connector for touch input
6
MIPI-DSI
30-pin, 0.5mm pitch FPC connector for 4-lane 1080P displays
7
MIPI-CSI
30-pin, 0.5mm pitch, 4-lane, dual cameras, 8MP image signal processing
8
SPI Flash
Flash memory module that interfaces over SPI
9
XPWR Pads
Connect an external power switch using these pads
A
M-Register
Allows the EMMC to enter MaskROM mode
B
S-Register
Allows the SPI Flash to enter MaskROM mode
C
Current Limit Switch
Prevents damage to VIM3 due to faulty loading conditions
VIM3 Buttons
Reset
Function
Power
Purpose
x
Force Reboot VIM3
x
Enter Upgrade Mode (TST)
x
Power ON/Wake Up VIM3
x
x
Enter Upgrade Mode (KEYS)
x
x
x
Erase EMMC
VIM3 Indicator LEDs
Colour
Behaviour
Meaning
Blue
OFF
Power source disconnected
Solid ON
Power source connected, SBC turned off
White
OFF
SBC turned off
Solid ON
SBC turned on
Red
None
None
The above behaviours are default out-of-the-box, and can be altered by a user.
For example the white LED can be made to blink or breathe. For more information
on how to program them via your favourite OS (each OS is different), please
consult with experts at forum.khadas.com.