1000 Base-BX WDM Bi-Directional SFP Module Adopts the latest standard 1000 Base-BXUp to 2 km transmission distance in 9125 &956;m SMF (Single-Mode Fiber) Compatible with Small Form Pluggable Multi-Source Agreement (SFP-MSA) Supports Digital Diagnostic Monitoring (DDM) Supports Hot Swappable What This Product Does TP-LINK&180;s TL-SM321A-2 is developed in accordance with the Small Form Pluggable Multi-Source Agreement (SFP-MSA) As a WDM Bi-Directional optical transceiver TL-SM321A-2 uses an integrated LC Bi-Directional optical interface connector & the data link is up to 2 km in 9125 &956;m SMF (Single-Mode Fiber) Also TL-SM321A-2 incorporates the Digital Diagnostic Monitoring (DDM) feature which is compatible with SFF-8472 DDM supports real-time monitoring of the transceiver & shows parameters including the transceiver current which transmitsreceives optical power & operating temperature TP-Link's TL-SM321A-2 is used for short-and medium distance fiber network in practice & it provides fast & stable gigabit fiber connection for switches routers servers etc Device Type Bi-Directional SFP Module Standards & Protocols IEEE 8023z TCPIPCable Single-mode Fiber Fiber Type 9125 um Single-Mode Data Rate 125 Gbps Wave Length TX 1550 nm RX 1310 nm Port Type LC Simplex Power Supply 33 VEnvironment (&8451;) Operating Temperature 0&8211;70 &176;C (32&8211;158 &176;F) Storage Temperature -40&8211;85 &176;C (-40&8211;185 &176;F) Operating Humidity 10&8211;90 RH Non-Condensing Storage Humidity 5&8211;90 RH Non-Condensing