Pin Assignments; Serial Interface - Compaq AP400 Maintenance And Service Manual

8-2 External Connectors
External Connectors
Reference
Video port (PCI)
6
Parallel port connector
7
Video Port (AGP)
8
USB connectors (2)
9
RJ-45 connector
-
SCSI port
q
Serial port connector
w
Keyboard connector
e
Headphone jack
r
Audio line-out connector
t
Voltage Selector Switch
y
Serial number
u

Pin Assignments

1 2
6 7
Continued
Connector
Connector and Icon
3 4 5
8 9
Connects a monitor (available on select models)
Connects a parallel device such as a printer
Connects a monitor (available on select models)
Connects to USB devices
Connects to the Ethernet network
Connects to a SCSI device
Connects a serial device, such as a serial printer; COM 2 (B) on top,
COM 1 (A) on bottom
Connects to a keyboard (orange icon)
Connects to headphones
Connects an external amplifier (to power additional speakers) or a tape
deck for recording
Switches voltage from 115V to 230V
Identifies the workstation
Table 8-2

Serial Interface

Pin
1
2
3
4
5
6
7
8
9
Function
Signal
Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Request to Send
Clear to Send
Ring Indicator