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© Copyright 2011. Black Box Corporation. All rights reser ved.
Black Box and the Double Diamond logo are registered trademarks of
BB Technologies, Inc. Any other trademarks mentioned in this manual
are acknowledged to b e the prop erty of the trademark owner s.
Add 4 PoE devices to your
existing Gigabit LAN.
5-Port Gigabit 802.3af PoE Switch
LP B1205A
Order toll-free in the U.S.:
Call 877-877-BBOX
(outside U.S. call 1-724-746-5500)
FREE technical support
24 hours a day, 7 days a week:
Call 724-746-5500 or
fax 724-746-0746
Mailing address:
Black Box Corporation
1000 Park Drive
Lawrence, PA 15055-1018
Web site: www.blackbox.com
E-mail: info @blackbox.com
Customer
Support
Information
Black Box Tech
Support : FREE! Live.
24 / 7. Tech support
the way it should be.
5-Port Gigabit 802.3af PoE Switch
LPB1205A, re v. 1
LPB 1205 A
1. Specifications
Buffer Memory — 104 Kbits
Certifications — FCC Class A
Filtering/Forwarding Rates —
1000-Mbps port: 1,488,000 pps;
100-Mbps port: 148,800 pps;
10-Mbps port: 14,880 pps
MAC Address — 1 K
PoE — Supports up to 15.4 W for each PoE port,;
PoE power budget: 62 W; PD classification identify;
PoE overcurrent protection; PoE overcurrent
protection, PoE circuit sorting protection; PoE power
on RJ-45 Pins 3 and 6 for power +, Pins 1 and 2
for power -
Standards — IEEE 802.3 10BASE-T, IEEE 802.3u
100BASE-TX, IEEE 802.ab 1000BASE-TX, IEEE
802.3af Power over Ethernet
Transmission Media —
10BASE-T: CAT3, 4, 5 UTP/STP;
100/1000BASE-TX: CAT5e/6/7 UTP/STP
3.2 PC/Other Devices to 5-Port Gigabit
802.3af PoE Switch
You can connect this switch to PCs, servers, and other
network devices using a straight-through Ethernet
cable.
3.3 Connecting a Powered Device to the
Switch Using Power over Ethernet (PoE)
Using a CAT5 cable, connect the powered device (PD)
to any of the four device ports on the switch. The
switch will detect the PD and supply 48-V power to
the device over the CAT5 cable.
NOTE: The PD must comply with the IEEE 802.3af
standard.
4. Operation
LED indicators on the 5-Port Gigabit 802.3af PoE
Switch’s front panel show status.
Great tech support is just 30 seconds
away at 724-746-5500 or blackbox.com.
5-Port Gigabit 802.3af PoE Switch
Table 4-1. LEDs and their Functions.
LED Status Description
Power
Green On Power to th e unit is o n and norm al
Off Power to th e unit is of f
Uplink
Green/ Yellow On Ethernet up link port is connected
Green flashing Uplink data activity at 100 0 Mbps
Yellow flashing Uplink data activity at 100 Mbps
Flashing Uplink data activity at 10 Mb ps
LAN
Green/ Yellow On Ethernet up link port is connected
Green flashing Ethernet up link data ac tivity at 1000 Mbps
Yellow flashing Ethernet up link data ac tivity at 100 Mb ps
Flashing Ethernet up link data ac tivity at 10 Mbps
PoE
Green On PoE func tion is ena bled
Off PoE func tion is dis abled
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5-Port Gigabit 802.3af PoE Switch 5-Port Gigabit 802.3af PoE Switch5-Port Gigabit 802.3af PoE Switch
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LPB 1205 A LPB 1205 ALPB 1205 A
Connectors — (4) RJ-45 PSE/PoE, (1) RJ-45 uplink
port
Indicators — (10) LEDs: Per port: (1) LAN, (1) PoE,
Per unit: (1) Power LED, (1) Uplink LED
Temperature Tolerance — Operating: 32 to 122° F
(0 to 50° C)
Relative Humidity — 10 to 90%, noncondensing
Power — 100–240 VAC/50-60 Hz external power
supply
Size — 2.8”H x 9”W x 12”D (7.1 x 22.9 x 30.5 cm)
Weight — 2.6 lb. (1.2 kg)
2. Overview
2.1 Introduction
This switch provides five 10-/100-/1000-Mbps ports
([1] Gigabit uplink port and [4] Power-over-Ethernet
[PoE] ports). Each port supplies up to 15.4 W, and the
total PoE budget is 62 W. The switch is ideal for office
and home users who want to use a combination of
PoE and non-PoE enabled devices. The switch‘s four
PoE-enabled ports connect to a mixture of PoE IP
phones, PoE with APs, and PoE IP cameras. Plus, it
automatically detects an IEEE 802.3af compliant device
connected to the switch and provides power and data
over a single cable.
2.2 What’s Included
Your package should contain the following items.
If anything is missing or damaged, contact Black Box
Technical Support at 724-746-5500 or
info@blackbox.com.
• (1) 5-Port 802.3af PoE Gigabit Ethernet Switch
• (1) AC to DC power adapter (48-VDC/1.35 A)
• This user’s manual
2.3 Features
• Each port autonegotiates between 10, 100, and
1000 Mbps.
• Four ports support PSE/PoE.
• Supports up to 15.4 W maximum power for each
PSE/PoE port.
• Auto-learns network configurations.
• Auto-detects full-/half-duplex modes for any port.
• Offers dedicated full-duplex 2000-Mbps bandwidth.
• Store-and-forward switching methods.
• IEEE 802.3x flow control for full-duplex and back-
pressure flow control for half-duplex operation.
• Non-blocking and non-head-of-line blocking full
wire-speed forwarding.
• Auto-MDI/MDI-X function for any port.
• Smart plug-and-play.
2.4 Hardware Description
Figures 2-1 and 2-2 show the switch’s front and back
panels. Table 2-1 describes its components.
6 4 2
5 3
Figure 2-1. Front panel.
7 1
Figure 2-2. Back panel.
Table 2-1. Components.
Number Component Description
1 (4) RJ -45 connectors Link to 10 /100/100 0 Ethernet devices
2 (1) RJ- 45 connecto r Connects to 1000 -Mbps u plink
3 (4) L AN LEDs
Lights w hen port is connected; fla shes
when data is transmitting or re ceiving.
4 (4) PoE LEDs
Lights when port is linked to power
device; Off when no power device is
connected.
5 (1) Uplink LED
Green/yellow on: Ethernet uplink port
is connec ted;
Green flashing: Uplink data activity at
1000 Mbps;
Yellow flashing : Uplink dat a activity at
100 Mbps
Flashing: Upllink data activity at
10 M bps
6 (1) Power LED
Lights when power to the unit is on
and normal
7
(1) barrel connector
for power
Connects to power a dapter
3. Installation
3.1 Switch/Hub to 5-Port Gigabit 802.3af
PoE Switch
This switch provides automatic crossover detection for
any port so it’s simple to uplink to another switch
without using a crossover cable.
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