Dell B-FCX manual Installing and replacing a power supply unit, Wiring map for serial cable

2 Installing and replacing a power supply unit

FIGURE 26 Serial Port (DB-9 DTE) Pin-Out

1 5

6 9

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 Table 16.

Wiring map for serial cable

TABLE 16		Serial cable wiring
Switch 9-Pin Serial Port			Null Modem		PC 9-Pin DTE Port
2	TXD (transmit data)		----------------------------	>	2	RXD (receive data)
3	RXD (receive data)		<----------------------------		3	TXD (transmit data)
5	SGND (signal ground)		<--------------------------	>	5 SGND (signal
					ground)

No other pins are used.

NOTE

As indicated in Table 16, some of the wires should not be connected.

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 Table 1 on page 3.

26	PowerConnect B-FCX Switch Hardware Installation Guide
	53-1002267-01