High-Performance Single-Strand Fiber Connectivity. The SM321A is a high-performance WDM Bi-Directional SFP module designed for use with TP-Link managed/smart switches and media converters. By using WDM technology, it transmits and receives data over a single strand of fiber, saving on infrastructure costs without sacrificing speed or distance.

Key Features:

• Bi-Directional WDM Technology: Transmits and receives data on a single fiber strand using different wavelengths (TX: 1550 nm / RX: 1310 nm).

• 20km Transmission Distance: Provides reliable gigabit connectivity for long-range campus, city-wide, or industrial networks.

• Hot-Swappable SFP: Install or replace the module without powering down the switch, ensuring zero network downtime.

• Single-Mode Fiber Compatibility: Designed for use with 9/125µm SMF (Single-Mode Fiber) for maximum signal integrity.

• Standard Compliance: Fully compatible with IEEE 802.3z and SFP MSA (Multi-Source Agreement) standards.

• Plug and Play: No software or configuration required; works instantly with compatible SFP slots.

What’s in the Box:

• SM321A SFP Module

• Installation Guide