
Media Converters
Lantronix SPOEB Series Fast Ethernet PoE Fiber Media Converters
The SPOEB Series are stand-alone Fast Ethernet media converters that bring a fiber link to a remote powered device and supply IEEE 802.3af PoE on the copper port, so one box delivers both data and power.
Overview
About the Lantronix SPOEB Series
The SPOEB Series (part numbers such as SPOEB1013, also written SPOEB 1013) solves a common edge problem: a powered device such as an IP camera sits beyond copper distance from the switch, but still needs PoE. The converter terminates a 100Base-FX fiber link, combines the data with 48 VDC power from its external AC supply, and acts as IEEE 802.3af power sourcing equipment (PSE) on a 10/100 RJ-45 port over the existing Cat5 cable.
PoE functions include PD signature detection, power monitoring, over-current protection, under-current detection, minimum load sensing and a fault protection input, with power inserted on either the data pairs or the spare pairs. With the PSE/LPT switch enabled, a loss of fiber RX cuts PoE output for 2 seconds so the remote device re-initializes, a feature Lantronix calls Powered Device Reset. Eight DIP switches set auto-negotiation, forced speed and duplex, Link Pass Through and PSE on or off.
Link Pass Through, Far-End Fault and automatic link restoration carry fiber faults through to the copper side so upstream equipment sees the failure. LEDs report power, fiber and copper link, activity, speed and duplex, and PoE status. The converters draw up to 20 W, support 1600-byte frames and operate from 0 to 50 C.
Key capabilities
- Built-in 802.3af PSE
- Each converter injects 48 VDC power on the RJ-45 port, powering IEEE 802.3af devices without a separate PoE switch or injector.
- Powered Device Reset
- When fiber RX is lost and PSE/LPT is enabled, PoE output drops for 2 seconds so the remote powered device reboots and re-initializes.
- Four fiber options
- Choose 1300 nm multimode with ST, SC or LC connectors for 2 km links, or an empty 100Base-X SFP slot for other fiber types.
- Data or spare pair power
- Power can be inserted on the data pairs or the spare pairs of the MDI, matching the requirements of different powered devices.
- DIP-switch configuration
- Hardware switches set auto-negotiation, forced 10 or 100 Mbps, copper and fiber duplex, Link Pass Through and PSE output without software.
How to choose the right SPOEB Series part number
All SPOEB models share the same 10/100Base-TX PoE copper port and 802.3af PSE features; they differ only in the fiber side. SPOEB1011-105 uses ST connectors, SPOEB1013-105 uses SC and SPOEB1039-105 uses LC, all 100Base-FX on 1300 nm multimode with an 11.0 dB link budget and 2 km reach. SPOEB1040-105 has an empty 100Base-X SFP slot, so the installed SFP sets fiber mode, wavelength and distance. Match the connector to the patch panel or the far-end converter.
Configure & order
Find your SPOEB Series part number
Every orderable SPOEB Series configuration, filtered by the specs that actually differ between them. Pick what you need on the left and the matching part numbers appear here.
Complete the deployment
Accessories, renewals & add-ons
Everything sold for the SPOEB Series, organized by what it does — mounting & enclosures, chassis & shelves— each with why you'd add it.
Mounting & enclosures
1 item
WMBL
WMBL
4″ [102 mm] wall-mount bracket kit for stand-alone converters size 4.8″ [122 mm] and 6.5″ [165 mm]. It is listed as a compatible accessory for the E-100BTX Series.
$16.00
2 in stock
Chassis & shelves
3 items
WMBD
WMBD
5″ [127 mm] DIN Rail Mount Bracket for all Stand-Alone Converters and 1- or 2-Slot ION Chassis.
$11.00
Ships on backorder

WMBV
WMBV
5″ [127 mm] vertical mount for all Stand-Alone Converters and 1- or 2-slot ION Chassis. It supports wall-mountable installations and is supplied as a bulk package quantity of 1.
$22.00
Ships on backorder

RMS19-SA4-02
RMS19-SA4-02
19-inch, 1U rack-mount shelf for up to 4 stand-alone media converters. It includes 4 converter mounting brackets and 3 slot blanks.
$177.00
3 in stock
Compatibility taken from the Lantronix part-number tables for the SPOEB Series. Don't see what you need? Request a quote — we can source the full Lantronix catalog.
Where the SPOEB Series is used
- Powering IP cameras at the end of long fiber runs
- Fiber-to-the-desk links with PoE at the work area
- Security and surveillance upgrades on existing multimode fiber
- Remote 802.3af devices beyond 100 m copper limits
SPOEB Series FAQ
What PoE standard does the SPOEB media converter support?
The SPOEB is IEEE 802.3af power sourcing equipment with a 48 VDC PSE output. It includes PD signature detection and power monitoring per 802.3af, and is compatible with powered devices that comply with that standard.
How far can the SPOEB fiber link reach?
The SPOEB1011-105, SPOEB1013-105 and SPOEB1039-105 support 2 km over 1300 nm multimode fiber with an 11.0 dB link budget. The SPOEB1040-105 uses an SFP slot, so distance depends on the SFP module installed. The copper PoE port supports 100 m.
What is Powered Device Reset on the SPOEB?
With the PSE/LPT switch enabled, a loss of fiber RX disables PSE power on the UTP port for 2 seconds. This forces the remote powered device, such as a camera, to restart and re-initialize when the link fails.
How is the SPOEB converter powered?
The SPOEB uses an external AC power supply and consumes up to 20 W maximum. It operates from 0 to 50 C and mounts with WMBD DIN-rail, WMBV vertical or WMBL wall brackets, or in the RMS19-SA4-02 4-slot media converter shelf.



