
Media Converters
Lantronix M/E-PSW Series Mini Fast Ethernet Media Converters
The M/E-PSW Series are mini Fast Ethernet media converters that link 10/100Base-TX copper to 100Base-FX fiber, accepting both 10 and 100 Mbps devices on the copper side, with multimode reach to 2 km and single-mode to 20 km.
Overview
About the Lantronix M/E-PSW Series
The M/E-PSW Series (also written ME-PSW) moves Fast Ethernet traffic onto fiber from a 46 x 85 x 22 mm housing. Its copper port auto-negotiates 10 or 100 Mbps, so older 10 Mbps equipment can share a 100Base-FX fiber link with newer devices. Lantronix highlights two consequences of that design: it connects legacy network equipment and it eliminates collision domains between the copper and fiber segments.
Fiber options are 1300 nm multimode to 2 km with an 11.0 dB link budget, on ST (M/E-PSW-FX-02) or SC (M/E-PSW-FX-02(SC)) connectors, and 1310 nm single-mode SC to 20 km with a 16.0 dB budget (M/E-PSW-FX-02(SM)). The fiber port runs fixed full-duplex, the copper port supports auto-negotiation and Auto-MDI/MDIX, and Far-End-Fault plus Automatic Link Restoration help detect and recover from fiber failures. Maximum frame size is 1632 bytes.
Power comes from an external 12 VDC, 0.5 A supply into a 7.5 to 13.9 VDC input, with 2.6 W consumption. Operating range is 0°C to 50°C. Units mount with the WMBM wall, DRBM DIN-rail or RMBM rack brackets, or slide into the 18-slot M-MCR-01 chassis.
Key capabilities
- 10 and 100 Mbps copper
- The auto-negotiating 10/100Base-TX port connects legacy 10 Mbps devices as well as 100 Mbps equipment to the same fiber link.
- 20 km on single-mode
- M/E-PSW-FX-02(SM) carries 100Base-FX at 1310 nm over single-mode SC fiber to 20 km with a 16.0 dB link budget.
- ST or SC multimode
- The 2 km multimode version comes with ST or SC connectors to match the existing fiber plant without adapter cables.
- Far-End-Fault detection
- Far-End-Fault signaling and Automatic Link Restoration flag a fiber break at both ends and bring the link back once it is repaired.
- 18-slot chassis option
- Up to 18 units fit the M-MCR-01 powered chassis with 19-inch rack ears for central-office or closet density.
How to choose the right M/E-PSW Series part number
All three models convert 10/100Base-TX copper to 100Base-FX fiber; the suffix sets fiber type and connector. M/E-PSW-FX-02 is 1300 nm multimode with ST connectors, M/E-PSW-FX-02(SC) is the same optic with SC connectors, both reaching 2 km with an 11.0 dB budget. M/E-PSW-FX-02(SM) is 1310 nm single-mode SC for runs up to 20 km at 16.0 dB. Each needs an external 12 VDC supply; mounting brackets and the M-MCR-01 chassis are optional.
Configure & order
Find your M/E-PSW Series part number
Every orderable M/E-PSW 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 M/E-PSW Series, organized by what it does — power, mounting & enclosures, chassis & shelves— each with why you'd add it.
Power
1 item
SPS-2460-SA
SPS-2460-SA
Stand-alone wide input external power supply for all Lantronix stand-alone media converters and some chassis.
$248.00
Ships on backorder
Mounting & enclosures
3 items
WMBM
WMBM
3.3” [84 mm] wall mount bracket kit for “Mini” Media Converters. It is listed as a compatible accessory for the M/GE-PSW-PSE-01 series.
$24.00
9 in stock
RMBM
RMBM
Rack mount bracket for mini media converters. It is used with E-MCR-05 and RMS19-SA4-02.
$28.00
Ships on backorder

DRBM
DRBM
3.3” [84 mm] DIN Rail Mount Bracket for “Mini” Media Converters. It fits all “Mini” Media Converters.
$28.00
Ships on backorder
Chassis & shelves
1 item
M-MCR-01
M-MCR-01
18-slot powered chassis for non-hardened Mini Media Converters. It includes 19″ rack mount ears and uses one AC power connection for multiple deployed Minis.
Compatibility taken from the Lantronix part-number tables for the M/E-PSW Series. Don't see what you need? Request a quote — we can source the full Lantronix catalog.
Where the M/E-PSW Series is used
- Connecting legacy 10 Mbps equipment to 100 Mbps fiber
- Extending Fast Ethernet between buildings on single-mode fiber
- Fiber-to-the-desk at 100 Mbps for secure workstations
- Reusing installed ST-terminated multimode fiber
M/E-PSW Series FAQ
Will the M/E-PSW connect a 10 Mbps device to 100Base-FX fiber?
Yes. The copper port is 10/100Base-TX with auto-negotiation and Auto-MDI/MDIX, while the fiber port runs 100Base-FX at fixed full-duplex. Lantronix lists connecting legacy network equipment and eliminating collision domains among the series features.
How far can the M/E-PSW-FX-02(SM) transmit?
Up to 20 km (12.4 miles) over single-mode fiber at 1310 nm, with SC connectors and a 16.0 dB link budget. The multimode M/E-PSW-FX-02 and M/E-PSW-FX-02(SC) reach 2 km at 1300 nm.
What power supply does the M/E-PSW need?
An external AC/DC supply of +12 VDC at 0.5 A minimum. The input accepts 7.5 to 13.9 VDC, and the converter draws 2.6 W. The SPS-2460-SA supply is listed as a compatible accessory.
Can M/E-PSW converters be rack-mounted?
Yes. The M-MCR-01 is an 18-slot powered chassis for non-hardened mini converters with 19-inch rack ears. The RMBM bracket mounts minis in the E-MCR-05 rack or RMS19-SA4-02 shelf, and WMBM and DRBM brackets cover wall and DIN-rail installs.



