TP-Link 1000Base-BX WDM Bi-Directional SFP Module (TL-SM321A-2) • Adopts the latest standard 1000Base-BX • Up to 2 km transmission distance in 9/125 μm SMF (Single-Mode Fiber) • Compatible with Small Form Pluggable Multi-Source Agreement (SFP-MSA) • Supports Digital Diagnostic Monitoring (DDM) • Supports Hot Swappable HARDWARE FEATURES DDM Yes SFP-MSA Yes Hot Swappable Yes MEDIA CONVERTER & MODULE Standards and Protocols IEEE 802.3z, TCP/IP Wave Length TX: 1550 nm RX: 1310 nm Power Supply 3.3 V Safety & Emission FCC, CE Cabel Single-Mode Fiber Fiber Type 9/125 μm Single-Mode Max. Cable Length 2 KM Data Rate 1.25 Gbps Port Type LC Simplex Environment Operating Temperature: 0–70 °C (32–158 °F) Storage Temperature: -40–85 °C ( -40–185 °F) Operating Humidity: 10–90% RH, Non-Condensing Storage Humidity: 5–90% RH, Non-Condensing