Serial Port; Usb Port - HP Integrity MC990 X User Manual

Serial port

The system motherboards have 9-pin serial interface connectors. These ports provide serial access to the
individual chassis and are capable of transferring data at rates as high as 230 kbps. Other features of the
ports include the following:
• Programmable data, parity, and stop bits
• Programmable baud rate and modem control
Figure 22: Serial port connector on page 63 shows a serial port.
Figure 22: Serial port connector
Serial port pinout shows pinout assignments for the 9-pin male DB-9 connector.
Table 11: Serial port pinout
Pin
1
2
3
4
5
6
7
8
9

USB port

The USB type A connector (Figure 23: USB type A port connector on page 64) shows provided on
the BaseI/O that supports general USB applications and optional keyboard and mouse configurations.
Pin assignments for USB type A connector lists the pin assignments for the USB type A connector.
Assignment
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
Description
Data carrier detect
Receive data
Transmit data
Data terminal ready
Signal ground
Data set ready
Request to send
Clear to send
Ring indicator
Serial port 63