Serial Port Connector; Serial Port Connector Diagram; Serial Port Connector Signals - Sun Microsystems Sun Fire V440 Installation Manual

Further details about the diagnostic use of LEDs are discussed separately in the Sun
Fire V440 Server Diagnostics and Troubleshooting Guide.

Serial Port Connector

Accessible from the back panel of the Sun Fire V440 server is a DB-9 connector
labeled ttyb that serves as a single, general-purpose serial port.

Serial Port Connector Diagram

Serial Port Connector Signals

Pin Signal Description
1 Data Carrier Detect
2 Receive Data
3 Transmit Data
4 Data Terminal Ready
5 Ground
1 2 3 4 5
SERIAL
6 7 8 9
Pin
6
7
8
9
Appendix A
Signal Description
Data Set Ready
Request to Send
Clear to Send
Ring Indicate
Background and Reference 51