Acer Altos 1100 Series - Manual (Page 21)

Chapter 1 – System Board 1-7
1.4.3 Connector Functions
Table 1-2 lists the different connectors on the system board and their respective
functions.
Table 1-2 Connector Functions
Connector Function
CN2 280-watt 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 Reserved
CN25 Housing fan 4
CN26 Reserved
CN27 Power LED connector
CN28 Reserved
CN29 Housing HDD LED connector