# Fiber optic transceiver module BlueOptics FCMJ-8521-3-DL-BO 100m

**URL:** https://aio.lv/en/product--blueoptics-fcmj-8521-3-dl-bo--5041909
**Data updated:** 2026-02-25 16:38 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** FCMJ-8521-3-DL-BO
**EAN:** 4063232245782
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 62.49 €
**Prices and availability valid until:** 2026-08-16 23:59
**Price without VAT (21%):** 51.64 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-fcmj-8521-3-dl-bo--5041909

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 17.08.2026 | free |
| Pickup points | 20.08.2026 | 1.79 EUR |
| Courier delivery to door | 20.08.2026 | 4.99 EUR |

## Summary description

The BlueOptics FCMJ-8521-3-DL-BO is a fiber optic SFP transceiver module designed for high-speed data transfer over distances up to 100 meters. It features a lightweight aluminum design, weighing only 20 grams, making it ideal for various networking applications. This module is compatible with SFP interfaces, ensuring seamless integration into existing systems.

## Long description

The BlueOptics FCMJ-8521-3-DL-BO 100m is a fiber optic SFP transceiver module designed for short-range high-speed Ethernet links up to 100 meters. Constructed with a lightweight aluminium housing and weighing approximately 20 grams, this SFP-form-factor module fits standard SFP slots and integrates into existing network equipment that supports SFP transceivers. It delivers data transmission at gigabit class speeds over appropriate cabling and follows industry MSA form-factor compatibility for straightforward installation.
Advantages
The module offers a compact aluminium design that reduces weight and eases handling during installation. Compatibility with SFP interfaces ensures broad interoperability with switches, routers and other network devices that accept SFP modules. The transceiver supports gigabit data rates over distances up to 100 m, providing a reliable short-reach option for copper-to-optical or copper-based links where the SFP form factor is required.
Suitable for
Short-range gigabit Ethernet links in enterprise networks
Use in network switches and routers with SFP slots
Server and storage connectivity requiring SFP transceivers
Patch panel and data center patching applications up to 100 m
Key specifications
Interface type: SFP form factor
Nominal maximum link distance: up to 100 meters
Data rate class: gigabit Ethernet (1.25 G signalling class)
Housing material and colour: aluminium
Approximate weight: 0.02 kg
How to use
Insert the BlueOptics SFP module into an available SFP slot on a compatible switch, router or other network device following the device manufacturer’s insertion procedure. Connect appropriate twisted-pair or patch cabling and ensure the connected equipment is configured for the expected gigabit link speed and duplex settings. Verify link status and operational parameters in the host device management interface; no additional user configuration inside the module is required.
Usage recommendations
For reliable operation, use compatible SFP ports and appropriate cabling rated for gigabit Ethernet. Confirm device compatibility and, if necessary, update host firmware or software settings to enable third-party SFP modules. Avoid mechanical stress to the module and ensure adequate ventilation in densely populated chassis.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | SFP |
| Ethernet interface type | 1.25 Gigabit Ethernet |
| Ethernet LAN | Yes |
| Maximum transfer distance | 100 m |

### Network

| Feature | Value |
|---|---|
| SFP transceiver type | Fiber optic |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.02 kg |

### Packaging content

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 30 g |

### Logistics data

| Feature | Value |
|---|---|
| Warranty period | 5 year(s) |

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | 0 - 70 |

### Features

| Feature | Value |
|---|---|
| Product colour | Aluminium |

## FAQ

### How much does the Fiber optic transceiver BlueOptics FCMJ-8521-3-DL-BO cost, and is it available for purchase?

The price is 62.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1355 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 17.08.2026 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. 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 BlueOptics 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 BlueOptics 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: interface type, weight, product colour, 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.

## Image

https://aio.lv/img/cache/product/5041909/64354143_large.webp