TP-Link Omada 1000Base-BX WDM Bi-Directional SFP Module (SM321B)
The TP-Link SM321B is a 1000Base-BX WDM bi-directional SFP module designed for extending network reach over a single fiber strand. It transmits data in both directions using different wavelengths, reducing cabling infrastructure costs.
| Standards and Protocols | IEEE 802.3z, TCP/IP |
| Dimensions ( W x D x H ) | 2.1×0.5×0.5 in（55.4×13.7×12.9 mm） |
| Power Supply | 3.3 V |
| Fiber Type | 9/125 μm Single-Mode |
| Port Type | LC Simplex |
Product details
The SM321B adopts the latest 1000Base-BX standard, enabling bidirectional transmission over a single strand of fiber with one wavelength in each direction. This WDM (Wavelength Division Multiplexing) design eliminates the need for dual fiber runs, making it a cost-effective solution for network expansion in branch offices, data centers, and campus environments. Ideal for IT teams managing TP-Link Omada switches and infrastructure, the SM321B simplifies fiber deployments where single-strand fiber is already installed or preferred. The module integrates seamlessly into compatible Omada switching platforms. - 1000Base-BX standard support - WDM bi-directional technology - Single strand of fiber transmission - Dual wavelengths (one per direction) - Cost-saving infrastructure design- Delivery & professional installation
- Configuration & migration
- Manufacturer warranty handling
- Annual maintenance & managed services (MSP)
Talk to the engineers who install this equipment — free sizing advice, no obligation.
Specifications
| Switch Specs | |
|---|---|
| Standards and Protocols | IEEE 802.3z, TCP/IP |
| Dimensions ( W x D x H ) | 2.1×0.5×0.5 in（55.4×13.7×12.9 mm） |
| Power Supply | 3.3 V |
| Fiber Type | 9/125 μm Single-Mode |
| Port Type | LC Simplex |
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Frequently asked questions
How much does the TP-Link Omada 1000Base-BX WDM Bi-Directional SFP Module (SM321B) cost?
The reference price is MYR 89.00. Contact us for a formal quotation — project pricing depends on quantity and installation scope.
Is this product available in Malaysia?
Yes — available to order. Supplied and installed nationwide by RYZEN ESOLUTIONS (M) SDN BHD.
Who manufactures the TP-Link Omada 1000Base-BX WDM Bi-Directional SFP Module (SM321B)?
It is manufactured by TP-Link. We supply genuine units with manufacturer warranty.
Do you provide installation and support?
Yes — we design, install, configure and support this product as part of a complete solution. Ask us about maintenance packages.