
Managed PoE+ Gigabit
Switch with SFP+
Models: US-48-500W, US-48-750W

Introduction
Thank you for purchasing the Ubiquiti Networks® UniFi®
Switch with SFP+ and SFP. The UniFi Controller software and
User Guide are available for download at:
downloads.ubnt.com/unifi
This Quick Start Guide is designed to guide you through the
installation and show you how to access the Configuration
Interface. This Quick Start Guide also includes the warranty
terms, and is for use with the UniFi Switch with SFP+ and SFP,
modelUS‑48‑500W or US‑48‑750W. (The hardware description
and installation instructions are the same for both models.)
Package Contents
UniFi Switch
Managed PoE+ Gigabit
Switch with SFP+
Models: US-48-500W, US-48-750W
Power Cord Mounting Screws
(#10‑32 x 5/8", Qty. 4)
Cage Nuts
(#10‑32 x 5/8", Qty. 4)
Quick Start
Guide
System Requirements
• Linux, MacOSX, or Microsoft Windows 7/8
• Java Runtime Environment 1.6 (or above)
• Web Browser: Mozilla Firefox, Google Chrome, or Microsoft
Internet Explorer 8 (or above)
TERMS OF USE: All Ethernet cabling runs must use CAT5 (or above). It is the customer’s
responsibility to follow local country regulations and indoor cabling requirements.

Network Topology Requirements
• A DHCP‑enabled network for the UniFi Switch to obtain an
IPaddress (connected devices will also obtain IP addresses
after deployment)
• A management station running the UniFi Controller
software, located either on‑site and connected to the same
Layer2 network, or off‑site in a cloud or NOC
UniFi Switch
UniFi
Security
Gateway
Station
UAP-AC UAP-PRO
LAN
WAN
Network Health
www
WAN LAN
WLAN
VOIP
www
WAN LAN WLAN VOIP
IP
DNS
GATEWAY
ACTIVE CLIENTS
DOWN
UP
SWITCHES
USERS
GUESTS
DOWN
UP
APS
USERS
GUESTS
DOWN
UP
PHONES
EXTENSION
CALLS IN
CALLS OUT
XXX.XXX.XXX.XXX
XXX.XXX.XXX.XXX
192
0
0
0
0
0
0
162
2
0
0
0
30
4
3
6
0
DASHBOARD
MAP
DEVICES
CLIENTS
CALLS
STATISTICS
INSIGHTS
SETTINGS
CURRENT SITE
Default
REFRESH RATE
2 minutes
Network Health
www
WAN LAN
WLAN
VOIP
www
WAN LAN WLAN VOIP
IP
DNS
GATEWAY
ACTIVE CLIENTS
DOWN
UP
SWITCHES
USERS
GUESTS
DOWN
UP
APS
USERS
GUESTS
DOWN
UP
PHONES
EXTENSION
CALLS IN
CALLS OUT
XXX.XXX.XXX.XXX
XXX.XXX.XXX.XXX
192
0
0
0
0
0
0
162
2
0
0
0
30
4
3
6
0
DASHBOARD
MAP
DEVICES
CLIENTS
CALLS
STATISTICS
INSIGHTS
SETTINGS
CURRENT SITE
Default
REFRESH RATE
2 minutes
or
Sample Network Diagram
All UniFi devices support off‑site management controllers.
For setup details, refer to the User Guide on the website:
documentation.ubnt.com/unifi

Hardware Overview
Front Panel System LED
System
State Status
White Factory defaults, waiting for integration.
Flashing White Initializing.
Alternating
White/Blue
Device is busy; do not use or unplug it.
This usually indicates that a process such
as a firmware upgrade is taking place.
Blue
Successfully integrated into a network
and working properly.
Flashing Blue
This is used to locate a device.
When you click Locate in the UniFi
Controller software, the System LED
will flash blue. The software will also
display the location of the UniFi Switch
on the map.
Front Panel Port LEDs
RJ45: PoE
RJ45: Speed/Link/Act

SFP: Speed/Link/Act
SFP+: Speed/Link/Act
LED State Status
RJ45 1‑48
PoE
Off No PoE
Amber IEEE 802.3af/802.3at
Green 24V Passive
Speed/
Link/
Act
Off No Link
Amber
Link Established at
10/100Mbps
Flashing Indicates Activity
Green
Link Established at
1000Mbps
Flashing Indicates Activity
SFP+ 1‑2
Speed/
Link/
Act
Off No Link
Green
Link Established at 1Gbps
Flashing Indicates Activity
White
Link Established at
10Gbps
Flashing Indicates Activity
SFP 1‑2
Speed/
Link/
Act
Off No Link
Green
Link Established at 1Gbps
Flashing Indicates Activity

Front Panel Ports
RJ45 1-48
SFP 1-2
SFP+ 1-2
Port Description
RJ45 1‑48
RJ45 ports support Power over Ethernet (PoE)
and 10/100/1000 Ethernet connections.
SFP+ 1‑2
Hot‑swappable SFP+ ports support
1/10Gbps connections.
SFP 1‑2
Hot‑swappable SFP ports support 1 Gbps
connections.
Front Panel Button
Reset
Button Description
Reset
This button serves two functions for the
UniFi Switch:
• Restart Press and release the Reset
button quickly.
• Restore to Factory Default
Settings Press and hold the Reset button
for more than five seconds.
*640-00116-04*
640-00116-04

Back Panel
CONSOLE
Mounting Holes
Power
Mounting Holes
Console
Note: The Console port is reserved for future use.
Side Panels
Ventilation Holes
Fans
Installation Requirements
• Phillips screwdriver
• Standard‑sized, 19" wide rack with a minimum of 1U height
available
• For indoor applications, use Category 5 (or above) UTP
cabling approved for indoor use.
• For outdoor applications, shielded Category 5 (or above)
cabling should be used for all wired Ethernet connections
and should be grounded through the AC ground of the
power supply.
We recommend that you protect your outdoor networks
from the most brutal environments and devastating ESD
attacks with industrial‑grade shielded Ethernet cable,
TOUGHCable™, from Ubiquiti Networks. For more details,
visit: www.ubnt.com/toughcable
Note: Although the cabling can be located outdoors,
the UniFi Switch itself should be housed inside a
protective enclosure.

Hardware Installation
1. Connect the Power Cord to the Power port of the
UniFiSwitch.
2. Attach the UniFi Switch to the rack using the four Mounting
Screws. (If the rack has square slots, then use the Cage Nuts
with the Mounting Screws.)
Note: Keep 20 mm of clearance next to the
ventilation holes for adequate airflow.