IBM Aptiva 2142 - Manual (Page 166)

Serial Port
Mouse
Keyboard
USB (Universal Serial Bus)
Power Management Power
On/Off Switch Connector
Modem Wake Up on Ring
Detect Connector
Speaker Connector
Pin Signal Name I/O Pin Signal Name
1 Data Carrier Detect I 1 +5 V dc
2 Receive Data I 2 -Data
3 Transmit Data O 3 +Data
4 Data Terminal Ready O 4 GND
5 Signal Ground
6 Data Set Ready I
7 Request To Send O
Pin Signal Name 8 Clear To Send I
1 AUX5 9 Ring Indicator I
2 POWER_CNTRL
3 Ground
Pin Signal Name I/O
Pin Signal Name 1 Mouse Data I/O
1 AUX5 2 No Connection
2 Switch 3 Ground Power
4 + 5 V dc Power
5 Mouse Clock I/O
6 No Connection
Pin Signal Name
1 AUX5
2 Key (not populated) Pin Signal Name I/O
3 EXT_WAKEUP
1 Data I/O
4 Ground 2 Mouse Data
3 Ground Power
4 + 5 V dc Power
5 Clock I/O
6 Mouse Clock
Pin Signal Name
1, 2 Disabled
3, 4 Enabled
5-18