Cisco Systems Cisco ME 3400E PSU OK +24V -48V

3-3
Cisco ME 3400E Ethernet Access Switch Hardware Installation Guide
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Chapter 3 Installing and Removing AC- and DC-Power-Supply Modules
Product Overview
Figure 3-2 80-W DC-Power-Supply Module Handle Side
Figure 3-3 shows the DC-power-supply module PSU OK LED and the DC-voltage selector.
• For telecom applications (–36 to –72 VDC), set the DC-voltage selector to –48 VDC.
• For industrial applications (+18 to +36 VDC), set the DC-voltage selector to +24 VDC.
Figure 3-3 DC-Voltage Selector
The PSU OK LED on the AC-power-supply module looks the same as the one in Figure 3-3.
The AC-power-supply module does not have a voltage selector.
1Power-supply module 3DC-power-supply voltage switch
2PSU OK LED 4Extraction handle
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PSU OK +24V -48V
DC
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2 3
4
PSU OK +24V -48V
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