![background image](http://html.mh-extra.com/html/acer/altos-1100e-series/altos-1100e-series_user-manual_5810053.webp)
Chapter 2 – System Board
2-7
2.4.3
Connector Functions
Table 2-2 lists the different connectors on the system board and their respective
functions.
Table 2-2
Connector Functions
Connector
Function
CN2
SPP control connector
CN3
Power core connector
CN4
PS/2 mouse (above) / keyboard (below) connectors
CN7
Power core connector (Auxiliary)
CN8
USB connectors
CN9
CPU2 Fan Connector
CN10
CPU2 Temperature connector
CN11
COM2 (lower left), COM1 (lower right), and Parallel port (above)
CN12
HDD Fail LED signal connector
CN13
Housing fan 1
CN14
RJ45 LAN socket
CN15
Housing fan 2
CN16
CPU1 Temperature connector
CN19
FDD connector
CN20
CPU1 Fan connector
CN21
Secondary IDE connector
CN22
Primary IDE connector
CN23
Housing fan 3
CN24
SPS power and fan monitoring
CN25
Housing fan 4
CN26
Reset switch
CN27
Power LED connector
CN28
Reserved
CN29
Housing HDD LED connector