# TP-Link TL-SM321B Network Transceiver SFP WDM Optical Module 1.25Gb/s 1310/1550nm LC 2km

**URL:** https://aio.lv/en/product--tp-link-sm321b-2--10880371
**Data updated:** 2026-08-27 04:55 (EEST)
**Category:** Network Equipment Accessories
**Manufacturer:** TP-LINK
**Manufacturer code:** SM321B-2
**Warranty:** 5 Years
**Availability:** Available for order
**Price:** 16.49 €
**Prices and availability valid until:** 2026-11-19 23:59
**Price without VAT (21%):** 13.63 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tp-link-sm321b-2--10880371

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.11.2026 | free |
| Pickup points | 06.11.2026 | 1.99 EUR |
| Courier delivery to door | 06.11.2026 | 4.99 EUR |

## Summary description

The TP-Link TL-SM321B network transceiver is an SFP WDM optical module designed for high-speed fiber optic data transmission. It supports a data rate of 1.25Gb/s and operates at wavelengths of 1310/1550nm with an LC connector. Ideal for reliable enterprise network connections over distances up to 2km, ensuring stable communication in various network infrastructures.

## Long description

The TP-Link TL-SM321B network transceiver is an SFP WDM optical module engineered for high-speed fiber optic data transmission in modern enterprise environments. This reliable module supports a data rate of 1.25Gb/s and operates efficiently across wavelengths of 1310/1550nm utilizing an LC connector. Designed to facilitate stable communication over distances up to 2km, the TP-Link TL-SM321B integrates seamlessly into existing network infrastructures to deliver consistent performance and reliable connectivity.
Advantages
The TP-Link TL-SM321B network transceiver provides a dependable solution for extending fiber optic connections with minimal signal loss. Utilizing WDM technology, it maximizes fiber utilization by transmitting and receiving data over a single strand of fiber. Its compact SFP form factor ensures broad compatibility with standard networking hardware, while the hot-swappable design allows for easy installation and maintenance without disrupting network operations.
Suitable for
Connecting switches and routers across moderate distances up to 2km
Enterprise local area networks requiring reliable fiber optic integration
Expanding existing network infrastructures with WDM technology
When it may not be suitable, this network transceiver is not designed for long-range data transmission exceeding 2km. It is also incompatible with network equipment that does not support SFP slots or WDM optical module standards.
Key specifications
Data transmission rate of 1.25Gb/s
Operating wavelengths of 1310nm and 1550nm
LC connector type
Maximum transmission distance of 2km
SFP WDM form factor
To use the TP-Link TL-SM321B network transceiver, ensure the networking device is powered off or supports hot-swapping. Carefully insert the SFP module into the designated slot until it clicks securely into place. Connect the appropriate fiber optic cable with an LC connector to the module. Verify that the opposite end of the link utilizes a compatible WDM transceiver operating on the corresponding matching wavelengths.
What to consider before purchase includes verifying the compatibility of your existing switches, routers, or media converters with SFP WDM modules. Confirm that the required transmission distance does not exceed the 2km limit and that you have the correct single-strand fiber optic cabling with LC connectors.
Usage recommendations: Always handle optical transceivers with care to avoid dust contamination on the optical bore. Ensure that matching WDM transceivers are paired correctly at both ends of the fiber link to maintain stable and error-free communication.

## FAQ

### How much does the TP-Link TL-SM321B Network Transceiver cost, and is it available for purchase?

The price is 16.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 22 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 03.11.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All TP-LINK products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized TP-LINK service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/10880371/66026360_large.webp