Wiring Map For Serial Cable; Installing And Replacing A Power Supply Unit - Dell PowerConnect B-FCX624 Hardware Installation Manual

2

Installing and replacing a power supply unit

FIGURE 26
Most PC serial ports also require a cable with a female DB-9 connector. Terminal connections will
vary, requiring either a DB-9 or DB-25 connector, male or female. Serial cable options between a
Dell device and a PC or terminal are shown in

Wiring map for serial cable

TABLE 16
Switch 9-Pin Serial Port
2 TXD (transmit data)
3 RXD (receive data)
5 SGND (signal ground)
No other pins are used.
NOTE
As indicated in
Installing and replacing a power supply unit
CAUTION
For the PowerConnect B-FCX624 and PowerConnect B-FCX648 devices,be sure that the airflow
direction of the power supply unit matches that of the installed fan tray. The power supplies and
fan trays are clearly labeled with either a green arrow with an "E", or an orange arrow with an "I"
as shown in
26
Serial Port (DB-9 DTE) Pin-Out
1 5
6 9
Serial cable wiring
Null Modem
---------------------------->
<----------------------------
<-------------------------->
Table 16, some of the wires should not be connected.
Table 1 on page 3.
Table 16.
PC 9-Pin DTE Port
2 RXD (receive data)
3 TXD (transmit data)
5 SGND (signal
ground)
PowerConnect B-FCX Switch Hardware Installation Guide
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