TP-Link TL-SM321B 1000Base-BX WDM Bi-Directional SFP Module

Product SKU : TLSM321B

TP-LINK TL-SM321B 1000Base-BX WDM Bi-Directional SFP Module



Brand name TP-LINK

Item Weight 2.1 Kg

Product Dimensions 4.3 x 3.1 x 2.1 cm

Item model number TL-SM321B

Processor Count 1

Wireless Type 801.11 AC



TP-LINK´s TL-SM321B adopts the latest standard 1000Base-BX, transmission over a single strand of fiber, with one different wavelength going in each direction.

You can extend the network distance up to 10Km with TP-LINK´s Routers, Switches, Media Converters to provide high speed and stability.


∙ WDM Bi-Directional SFP Module

∙ Supports WDM Bi-Directional technology, using a single strand of fiber, cost saving

Suitable Products

TL-SG5428, TL-SL5428E, TL-SG3210/3216/3424/3424P, TL-SL3428/3452, TL-SG2216/2424, TL-SL2210WEB/2218WEB/2428WEB/2452WEB, TL-SL1351 and MC200L


Standards and ProtocolsIEEE 802.3z, CSMA/CD, TCP/IPWave LengthTX: 1310nm / RX: 1550nm
Power Supply3.3V
Safety & EmissionFCC, CE
CabelSingle-mode Fiber
Fiber Type9/125 μm Single-modeMax. Cable Length10kmData Rate1.25Gbps
Port TypeLC/UPCEnvironmentOperating Temperature: 0℃~70℃ (32℉~158℉)
Storage Temperature: -40℃~80℃ (-40℉~176℉)
Operating Humidity: 10%~90% non-condensing
Storage Humidity: 5%~90% non-condensing