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header-product SFP Module TP-Link TL-SM321A 1000Base-BX WDM 1250 Mbit/s
19.49 €

SFP Module TP-Link TL-SM321A 1000Base-BX WDM 1250 Mbit/s

SFP Module TP-Link TL-SM321A 1000Base-BX Photo 1
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Short description

The TP-Link TL-SM321A is a 1000Base-BX WDM Bi-Directional SFP module designed for high-speed fiber optic connections. It supports a maximum data transfer rate of 1250 Mbit/s and operates at an input voltage of 3.3 V. With a compact metallic design, it measures 55.4 mm in width, 12.9 mm in depth, and height. Certified by FCC and CE, this module ensures reliable performance for networking applications.
Available at price 19.49 €: 112 pcs.
Total available for order: 175 pcs.
Warranty: 2 Years
SKU: 8199
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
21.09.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
24.09.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.13 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / DPD Paku skapis / Omniva LV / Latvijas Pasts pakomāts / Latvijas Pasts nodaļa
24.09.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
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Product information

Description

The TP-Link TL-SM321A is a 1000Base-BX WDM bi-directional SFP module for fiber-optic network links. It transmits and receives on different wavelengths over a single strand of fiber, supports up to 1250 Mbit/s data rate and uses an internal +3.3 V power supply. The compact metallic module is compatible with a range of TP‑LINK devices and extends network distance up to 10 km when paired with a matching module.

Advantages

The module uses WDM bi-directional technology to carry two opposite data streams over one fiber strand, reducing cabling costs and simplifying installation. It provides separate TX and RX wavelengths (TX 1550 nm, RX 1310 nm), offers plug-and-play operation and meets FCC and CE certification for reliable interoperability with compatible switches, routers and media converters.

Suitable for

  • Extending Ethernet links up to 10 km over single-strand fiber
  • Connections between switches, routers and media converters supporting SFP 1000Base-BX
  • Environments where minimizing fiber cabling is important

Key specifications

  • Model: TP-Link TL-SM321A
  • Standard: 1000Base-BX (WDM Bi-Directional)
  • Interface type: SFP
  • Maximum data transfer rate: 1250 Mbit/s
  • TX wavelength: 1550 nm; RX wavelength: 1310 nm
  • Power supply: internal +3.3 V
  • Colour: Metallic
  • Typical range: up to 10 km (depends on link conditions)
  • Certifications: FCC, CE

How to use

Insert the TL-SM321A module into an SFP port on a compatible TP‑LINK switch, router or media converter and pair it with the complementary TL-SM321B module at the remote end. Connect a single-mode fiber cable between the two modules, verifying correct orientation of transmit and receive ends. Power on the devices; the module is plug-and-play and should negotiate link speed automatically. Ensure devices at both ends support 1000Base-BX operation.

Usage recommendations

Use the TL-SM321A in matched pairs (A with B) and with certified single-mode fiber for best performance. Verify device compatibility and port settings before deployment and observe ESD precautions when handling the SFP module.

Specifications

Interface type:
SFP
Maximum data transfer rate: The maximum speed with which data can be transmitted from one device to another.
1250 Mbit/s
SFP transceiver type:
Fiber optic
All features

Packaging data

Number of products included: The number of products that are included in the package.
1 pc(s)
Package weight: Weight of the packaged product.
60 g
Package height: The distance from the top to the bottom of the packaging.
38.5 mm
Package depth: The distance from the front to the back of the packaging.
122.5 mm
Package width: The distance from one side of the packaging to the other.
81.5 mm

Weight & dimensions

Height: The measurement of the product from head to foot or from base to top.
12.9 mm
Depth: The distance from the front to the back of something.
12.9 mm
Width: The measurement or extent of something from side to side.
55.4 mm

Operational conditions

Storage relative humidity (H-H):
5 - 90
Operating relative humidity (H-H):
10 - 90
Storage temperature (T-T): The minimum and maximum temperatures at which the product can be safely stored.
-40 - 80
Operating temperature (T-T): The minimum and maximum temperatures at which the product can be safely operated.
0 - 70

Certificates

Certification:
FCC, CE

Power

Input voltage: The voltage (V) which is required to power the product.
3.3

Features

Plug and Play: Indicates whether this product supports is "plug and play". Plug and play is hardware or software that, after being installed ("plugged in"), can immediately be used ("played with"), as opposed to hardware or software which requires configuration.
Yes
Product colour: The colour e.g. red, blue, green, black, white.
Metallic

Performance

Networking standards: The way in which the network is working, e.g. IEEE 802.11a, IEEE 802.11b, IEEE 802.11g.
IEEE 802.3z
Rx wavelength (max):
1310 nm
Tx wavelength (max):
1550 nm
Maximum transfer distance: The greatest distance over which the data/signal can be transferred.
10000 m
Fiber cable diameters supported (core/cladding):
9/125
Fiber optic connector: This terminates the end of an optical fiber, and enables quicker connection and disconnection than splicing. The connectors mechanically couple and align the cores of fibers so light can pass. Better connectors lose very little light due to reflection or misalignment of the fibers. In all there have been about 100 types of optic fiber connectors produced.
LC (UPC)
Single-mode fiber (SMF) supported:
Yes
Interface type:
SFP
Maximum data transfer rate: The maximum speed with which data can be transmitted from one device to another.
1250 Mbit/s
SFP transceiver type:
Fiber optic

Description

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Stock data
Warehouse Stock Delivery to the store Store Price
BT17 112 21.09.2026 Best delivery
19.49 € Best price
EU1 20 23.09.2026
23.49 €
EU57 1 25.09.2026
26.49 €
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Warehouse Stock Delivery to the store Store Price
WH109 2 12.10.2026
28.99 €
19.49 €
Stock: 112
Delivery Date: 21.09.2026 Best delivery
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23.49 €
Stock: 20
Delivery Date: 23.09.2026
Warehouse: EU1
26.49 €
Stock: 1
Delivery Date: 25.09.2026
Warehouse: EU57
26.49 €
Stock: 20
Delivery Date: 06.10.2026
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31.49 €
Stock: 20
Delivery Date: 28.09.2026
Warehouse: WH94
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Customer reviews

Customer questions

FAQ

How much does the SFP Module TP-Link TL-SM321A 1000Base-BX cost, and is it available for purchase?

The price is 19.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 175 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 21.09.2026 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: interface type, maximum data transfer rate, sfp transceiver type, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

Where can I download the instructions for SFP Module TP-Link TL-SM321A 1000Base-BX?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.
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