![H3C H3C S5100-SI Installation Manual Download Page 67](http://html2.mh-extra.com/html/h3c/h3c-s5100-si/h3c-s5100-si_installation-manual_3168113067.webp)
Installation Manual
H3C S5100-SI/EI Series Ethernet Switches
Chapter 3 Installing the Switch
3-21
For a DC-powered switch (–48 VDC), if none of the first two conditions is available,
ground it through the return wire (RTN) of the DC power supply. In this case, make sure
this RTN wire is well connected to the ground at the DC output of the DC power cabinet.
(9)
(10)
(11)
(3)
(5)
(2)
(4)
(6)
(7)
(8)
(1)
(1) AC/DC power cabinet
(2) –48V strip
(3) –48V
(4) RTN strip
(5) RTN
(6) PGND strip
(7) Grounding to the earth
(8) Grounding wire
(9) Screw
(10) Ethernet switch
(11) DC power input
Figure 3-28
Ground the switch through the PGND of the power cabinet
3.6 Connecting Console Cable
3.6.1 Console Cable
Console cable is an 8-core shielded cable. At one end of the cable is a crimped RJ45
connector to be connected to the Console port of the switch; at the other end of the
cable is a DB-9 (female) connector to be connected to the 9-core (pin) serial port on the
Console terminal. See Figure 3-29.
Main label
1
8
B side
B
Pos.9
Pos.1
A side
A
Figure 3-29
Console cable