Extra info about the DVR motherboard

What I noticed is that they both use the same motherboard, the front and back sister boards appears to be the only difference.

Here's photos of the boards in my AR-6080 for you to compared for yourselves.
AR6080
Battery = CR2032
Motherboard = Type 372
Model = GVI883
Version = M4A2
Built date = 01/28/2011

unused connectors
Fan1
PC console con3
con21
USB
Download con18

Used connectors
USB con11
USB setting jumper con15
pin1 to pin2 = USB Master default setting closed
pin3 to pin4 = Firmware Download  default setting open
SATA1
SATA2
Frontboard con2
power supply for drives
con14 Backboard
con10 (camera control)
con8 (alarm)
con22 (motherboard power supply)
con7 HDMI
con16 VGA
con12 back USB
con9 network
sw1 = reset

Not installed connectors
con17
con4 (P5V)
con13

Still need to take my AR-6040 apart for photos.
updated 02 Dec 2014