Works at 1000Mbps in Full-Duplex mode for both TX port and FX port Supports auto MID/MID-X for TX port Provides switch configuration of Force /Auto transfer mode for FX port FX port support hot-swappable Extends fiber distance up to 0.55km for multi-mode fiber and 10km for single-mode fiber Easy-to-view LED indicators provide status to monitor network activity easily External power supply

TP-LINK´s TL-SM321A adopts the latest standard 1000Base-BX, transmission over a single strand of fiber, with one different wavelength going in each direction. You can extend the network distance up to 10Km with TP-LINK´s Routers, Switches, Media Converters to provide high speed and stability. WDM Bi-Directional SFP Module Supports WDM Bi-Directional technology, using a single strand of fiber, cost saving

Auto negotiation of 10/100Mbps and auto MID/MID-X for TX port Provide switch configuration of Half-Duplex / Full-Duplex transfer mode for FX port Link Fault Passthrough and Far End Fault minimize the loss caused by link failure timely Adopts WDM technology, transmitting and receiving data on one single fiber Extend fiber distance up to 20-60km Easy-to-view LED indicators provide status to monitor network activity easily External power supply

Auto negotiation of 10/100Mbps and auto MID/MID-X for TX port Provide switch configuration of Half-Duplex / Full-Duplex transfer mode for FX port Link Fault Passthrough and Far End Fault minimize the loss caused by link failure timely Adopts WDM technology, transmitting and receiving data on one single fiber Extend fiber distance up to 20-60km Easy-to-view LED indicators provide status to monitor network activity easily External power supply

Works at 1000Mbps in Full-Duplex mode for both TX port and FX port Supports auto MID/MID-X for TX port Provides switch configuration of Force /Auto transfer mode for FX port. Extends fiber distance up to 15km Easy-to-view LED indicators provide status to monitor network activity easily External power supply

Data Rate: 1.25Gbps Interface: LC Transmission Distance: 20 km Transmission Medium: Single-mode Wavelength: 1310nm/1550nm Sensitivity: ≤-23dBm Operating Voltage: 3.3V Output Power: -9dBm~-2dBm Working Temperature: -40°C ~ +85°C Dimensions(WxDxH): 13.7mm x56.5mm x8.95mm