TP-Link SM321B 1000Base-BX WDM Bi-Directional SFP Module (SM321B) – 10km, Single-mode fiber, LC simplex

The TP-Link SM321B 1000Base-BX WDM Bi-Directional SFP Module is a 1000BASE-BX SFP module for Single-mode fiber (single strand) links up to 10km. It connects switches, servers and storage over fiber, extending links well beyond copper distance limits. It uses an LC simplex connector at TX 1550nm / RX 1310nm. Pairs with SM321A.

Plug in, link up.

Longer, Faster Links Over Fiber

Copper Ethernet is limited to around 100 meters, which is not enough between floors, buildings or data centre rows.

The TP-Link SM321B 1000Base-BX WDM Bi-Directional SFP Module provides 1G over Single-mode fiber (single strand) up to 10km, plugging straight into a compatible port.

Optical and Electrical Specifications

Form factor: SFP. Speed: 1G. Media: Single-mode fiber (single strand). Wavelength: TX 1550nm / RX 1310nm. Reach: 10km. Connector: LC simplex.

Installation and Compatibility

Insert the module into a matching port until it clicks, then connect the cable. Use matching module types on both ends of the link.

Setup Instructions

How to Install the TP-Link SM321B 1000Base-BX WDM Bi-Directional SFP Module

1. Check that the host port supports this module type and speed.
2. Remove the dust cap and insert the module until it latches.
3. Connect the fiber or copper cable.
4. Confirm the link LED and port status in the switch or device interface.