1000Base-BX WDM Bi-Directional SFP Module with integrated LC connector, supporting up to 2 km in 9/125 _m SMF.

TP-LINK'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 and the data link is up to 2 km in 9/125 _m SMF (Single-Mode Fiber). It incorporates the Digital Diagnostic Monitoring (DDM) feature compatible with SFF-8472, supporting real-time monitoring of the transceiver, including optical power and operating temperature. Ideal for short-and medium-distance fiber networks, it provides fast and stable gigabit fiber connection for switches, routers, servers, etc.

Key Features

Adopts the latest standard 1000Base-BX
Up to 2 km transmission distance in 9/125 _m SMF (Single-Mode Fiber)
Compatible with Small Form Pluggable Multi-Source Agreement (SFP-MSA)
Supports Digital Diagnostic Monitoring (DDM)
Supports Hot Swappable

Technical Specifications

Specification	Value
DDM	Yes
SFP-MSA	Yes
Hot Swappable	Yes
Standards and Protocols	IEEE 802.3z, TCP/IP
Wave Length	TX: 1550 nm, RX: 1310 nm
Dimensions (WDH)	2.20.60.5 in (55.414.612.9 mm)
Power Supply	3.3 V
Safety & Emission	FCC, CE

1000Base-BX WDM Bi-Directional SFP Module

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SKU: SM321A-2

12,750 IQD

1000Base-BX WDM Bi-Directional SFP Module with integrated LC connector, supporting up to 2 km in 9/125 _m SMF.

Key Features

Adopts the latest standard 1000Base-BX
Up to 2 km transmission distance in 9/125 _m SMF (Single-Mode Fiber)
Compatible with Small Form Pluggable Multi-Source Agreement (SFP-MSA)
Supports Digital Diagnostic Monitoring (DDM)
Supports Hot Swappable

Technical Specifications

Specification	Value
DDM	Yes
SFP-MSA	Yes
Hot Swappable	Yes
Standards and Protocols	IEEE 802.3z, TCP/IP
Wave Length	TX: 1550 nm, RX: 1310 nm
Dimensions (WDH)	2.20.60.5 in (55.414.612.9 mm)
Power Supply	3.3 V
Safety & Emission	FCC, CE