TP-Link TL-SM321B-2 1000Base-BX WDM Bi-Directional SFP Module (New)

Condition: New
Warranty: 3 Month Warranty

Sale price$24.00

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1000Base-BX WDM Bi-Directional SFP Module

  • Designed for on-site gigabit fiber communication
  • Up to 2 km transmission distance with 9/125 μm SMF (Single-Mode Fiber)
  • Bidirectional WDM communication on a single fiber
  • Compatible with Small Form Pluggable Multi-Source Agreement (SFP-MSA)
  • Supports Digital Diagnostic Monitoring (DDM)
  • Hot-swappable module design
  • Work with TL-SM321A-2 as a pair

What This Product Does
TP-LINK´s TL-SM321B-2 and TL-SM321A-2 is designed to work in a pair to create an on-site gigabit fiber communication up to 2km (2,000 meters). With one single-mode fiber, the pair of modules can create a full-duplex gigabit path between your switches, storage devices, and server.

The TP-LINK´s TL-SM321B-2 is developed in accordance with the Small Form Pluggable Multi-Source Agreement (SFP-MSA). As a WDM Bi-Directional optical transceiver, TL-SM321B-2 uses an integrated LC Bi-Directional optical interface connector and the data link is up to 2 km in 9/125 μm SMF (Single-Mode Fiber).

Also, TL-SM321B-2 incorporates the Digital Diagnostic Monitoring (DDM) feature which is compatible with SFF-8472. DDM supports real-time monitoring of the transceiver, and shows parameters including the transceiver current which transmits/receives optical power and operating temperature.

TP-Link's TL-SM321B-2 is used for short-and medium distance fiber network in practice, and it provides fast and stable gigabit fiber connection for switches, routers, servers, etc.


Package Contents
SFP Module TL-SM321B-2
Installation Guide



Hot Swappable

Standards and Protocols
IEEE 802.3z, TCP/IP

Wave Length
Tx: 1310 nm
Rx: 1550 nm

Power Supply

Safety and Emission

Single-Mode Fiber

Fiber Type
9/125 micro meter Single-Mode

Max. Cable Length
2 KM

Data Rate
1.25 Gbps

Port Type
LC Simplex

Operating Temperature: 0 - 70 oC (32 - 158 oF)
Storage Temperature: -40 - 85 oC ( -40 - 185 oF)
Operating Humidity: 10 - 90% RH, Non-Condensing
Storage Humidity: 5 - 90% RH, Non-Condensing

Item Dimension (L"xW"xH")
11 x 11 x 9

1.00 lb

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