HP StorageWorks Fabric OS 5.3.x administrator guide (5697-0244, November 2009)

434 Configuring the PID format
When the port number is greater than or equal to 128, the area ID and port number are the same.
Figure 37 shows a 4/256 SAN Director with Extended Edge PID.
Figure 37 4/256 SAN Director with Extended Edge PID