Installation Guide

Table Of Contents
b. Secure the rear mounting brackets to the rack posts using suitable screws (not provided).
Be sure the switch is level.
6. If a grounding lug is present, ground the switch.
a. At one end of the wire, strip the insulation to expose 1/2 inch (12 mm) of bare wire.
b. Identify the grounding lug on the back of the switch.
c. Insert the stripped wire into the grounding lug.
d. Using a straight-tip torque screwdriver, tighten the retaining screw to 20 inlb (2.25 N m).
e. Connect the other end of the wire to a known reliable earth ground point at your site.
After the switch is secured to the rack or cabinet, install optional components using the instructions in
Installing Optional Components on page 76.
Then, if your switch does not have an installed power supply, install one or two power supplies using the
instructions in Installing Internal AC Power Supplies on page 76.
Installing Optional Components
After the switch is secured to the rack, install optional components.
ExtremeSwitching switches support the use of pluggable transceivers and cables in the SFP+, SFP28,
QSFP+, and QSFP28 formats.
For a list of the optical components supported with ExtremeSwitching devices, see the Extreme Optics
website.
Pluggable Transceiver Modules
Extreme Networks oers several optical transceiver modules for transmitting and receiving data over
optical fiber rather than through electrical wires.
Optical Cables
Direct-attach copper and fiber cables provide connections between unpopulated SFP+, SFP28, QSFP+,
and QSFP28 ports.
Installing Internal AC Power Supplies
The following AC internal power supplies (PSUs) are available for 5520 Series switches:
350 W AC PSU
Part numbers XN-ACPWR-350W-FB and 10953 are compatible with 5520-24T, 5520-24X,
5520-48T, and 5520-48SE switch models.
715 W AC PSU
Part numbers XN-ACPWR-715W-FB and 10951 are compatible with 5520-24W, 5520-12MW-36W,
and 5520-48W switch models.
1100 W AC PSU
Part numbers XN-ACPWR-1100W-FB and 10941 are compatible with 5520-24W, 5520-12MW-36W,
and 5520-48W switch models.
Installing Optional Components
Installing Your Switch
76 ExtremeSwitching 5520 Series Hardware Installation Guide