Advantech BB-855-11621

Compact Switching Media Converter

  • One 100 Mbps FDX fibre port
  • One 10/100 Base-TX twisted pair port
  • AutoCross automatic selection between crossover or straight-through connection
  • Supports Link Fault Pass Through
  • BB-855-11623: 1 Fibre MM1300-SC Port, 1 Ethernet RJ45 Connector


Media conversion is the most cost-effective solution for extending the productive life of legacy wiring plants and equipment while allowing implementation of new technologies. Measuring less than 88.9 mm deep and 50.8 mm wide, the MiniMc LFPT is one of the industry’s smallest media converters with both data connections on the same side of the unit. Link Fault Pass Through (LFPT) can be enabled/disabled via a DIP Switch on the unit, and is a useful diagnostic feature that assists the network administrator in indicating a fault condition on a given segment between the interfaces.

The MiniMc LFPT extends 10 and 100 Mbps twisted pair network segments up to 2 km over fibre. Both a media and data rate converter, the MiniMc LFPT features 10/100 Auto Negotiation on the copper port while the fibre port operates at 100 Mbps full duplex. MiniMc LFPT 10/100 switching fibre converters are ideal for all premises, FTTD, LAN-to-LAN or LAN-to-MAN fibre networking applications.

Part Number Fibre Fibre Ports Range Ethernet Ports Ethernet Connector
BB-855-11619 SFP 1 Various 1 RJ45
BB-855-11621 MM850-SC 1 2 km 1 RJ45
BB-855-11623 MM1300-SC 1 5 km 1 RJ45
IEEE 802.3 10Base-T twisted pair
IEEE 802.3u 100Base-TX twisted pair
Supports jumbo packets up to 1916 bytes
Plug-and-play operation
RJ-45, ST or SC and SFP connectors available 50/125µm or 62.5/125µm multimode fibre 9/125µm single-mode fibre
Available with single-strand fibre support
Country-specific, high-reliability power adapter
Auto Negotiation, Auto-Cross for MDI/MDIX
Layer 2 packet switching, store and forward (forwarding rate: 14,881 pps for 10 Mbps, 148,100 pps for 100 Mbps)
Status LEDs
Link Fault Pass Through
Dimensions 0.83”H x 1.80”W x 3.35”D
(2.11 x 4.57 x 8.51 cm)
Shipping Weight 0.7 lbs (.317 kg)
5 VDS, 500mA
AC Adapter: +32° F to +122° F (0° C to +50° C)
Operating Temperature +32° F to +122° F (0° C to +50° C)
Storage Temperature -31° F to +167° F (-35° C to +75° C)
Operating Humidity 5% to 95% (non-condensing)
Regulatory Approvals
FCC Class B

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