S50N And S50V; Power Over Ethernet (Poe) Support - Dell Force10 S50N Series Installing Manual

Figure 3-1. The S50N-DC Rear View
10-Gigabit Modules or Stacking Modules (optional).
Optical ports numbered from left to right.
Ethernet Port Numbers
49 to 52, Right to Left

S50N and S50V

CAUTION: The power supply cord is used as the main disconnect device; ensure that the socket-outlet is
located/installed near the equipment and is easily accessible.
As shown in Figure 2-2 on page
220V AC receptacle and a standard -48V terminal-type DC connector. The rear of an S50N differs only
in the arrangement of the lugs on its DC terminal block
power cord. There is no power switch. Connecting the switch to either an AC or DC power source starts
the switch.
On both the S50N and S50V, either the AC or DC power supplies alone are sufficient to power the switch.
When both AC and DC power supplies are connected, they act in roughly a 60%/40% load-sharing mode.
On the S50V, when the Dell Force10 470W DC Backup Power Supply is connected to the Current
Sharing connection on the S50V DC terminal block, the switch uses the DC and AC power supplies in
current-sharing (load-sharing plus additive) mode, so that the total capability is 470W+470W = 940W.
See Backup Power Components on page
Dell Force10 also offers an external 180W DC power supply for the S50N and S50N-DC models, the
same power supply used by the S50. However, the connections differ from those on the S50, so the power
supply ships with DC cables to support each model. Rack-mounting hardware is supplied. For details on
connecting to a power source, see

Power over Ethernet (PoE) Support

Along with the optional DC power supply noted above, the S50V includes an internal 470W power
supply that supports both the operation of the switch and an independent power distribution system to
supply power to the 48 copper Ethernet ports, supporting the IEEE 802.3af standard for Power over
Ethernet (PoE). Connect only powered devices that adhere to IEEE 802.3af.
Label (Part #, Serial #, MAC Address, Bar Code, FRU #)
Ground Connector
9, the rear of the S50N and S50V models have both an auto-sensing 110/
29.
Supplying Power on page
DC2
-48V -48V
-48V FG -48V FG
RTN RTN
DC1
(Figure 3-1). Each system ships only with the AC
27.
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