# Fiber optic SFP transceiver CBO J4859B-BO 1250 Mbit/s LC LX

**URL:** https://aio.lv/en/product--blueoptics-j4859b-bo--4465226
**Data updated:** 2026-02-25 16:30 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** BlueOptics
**Manufacturer code:** J4859B-BO
**EAN:** 4063232629407
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 35.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 29.74 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-j4859b-bo--4465226

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.07.2026 | free |
| Pickup points | 27.07.2026 | 1.99 EUR |
| Courier delivery to door | 27.07.2026 | 4.99 EUR |

## Summary description

CBO J4859B-BO is a fiber optic SFP transceiver with LC connector and LX wavelength type, supporting 1250 Mbit/s data rate. Designed for single‑mode fiber links, it enables reliable point‑to‑point network connectivity in switches, routers and media converters. Suitable for extending networks, linking devices over longer distances and replacing compatible SFP modules.

## Long description

CBO J4859B-BO is a BlueOptics fiber optic SFP transceiver designed for single-mode links with an LC connector and LX wavelength type. The module supports a data rate of 1250 Mbit/s and is intended for point-to-point connections in network equipment such as switches, routers and media converters. Its compact SFP form factor allows hot‑swappable installation and simple integration into standard SFP ports to extend network reach or replace compatible optical modules.
Advantages
The SFP transceiver offers a standardized small form‑factor that supports easy replacement and field upgrades without powering down equipment. With LC duplex connectivity and LX wavelength optimized for single‑mode fiber, the module provides stable optical transmission over extended distances. Supporting 1250 Mbit/s throughput, it is suitable for common Ethernet and fiber link applications while maintaining compatibility with a wide range of networking devices that accept SFP modules.
Suitable for
 Point-to-point fiber links between switches and routers
 Extending network segments across single‑mode fiber
 Replacing or upgrading compatible SFP modules in enterprise or access networks
 Integration with media converters and fiber patch panels
Key specifications
 Form factor: SFP (small form‑factor pluggable)
 Interface: LC duplex optical connector
 Wavelength type: LX (long wavelength for single‑mode fiber)
 Data rate: 1250 Mbit/s
 Fiber type: single‑mode fiber
 Hot‑swappable: yes
How to use
Insert the transceiver into an available SFP port of a switch, router or media converter until it clicks into place. Connect LC‑terminated single‑mode fiber patch cables to the module ensuring correct transmit/receive orientation. After physical installation, verify link status and configure the device port as required by your network settings. If necessary, consult the network equipment documentation for any vendor-specific SFP compatibility or configuration steps.
Usage recommendations
Use single‑mode fiber with appropriate LC patch cords and avoid bending the fiber beyond recommended radii. Verify compatibility with the host device and monitor optical power and link stability after installation. Store unused modules in anti‑static packaging and handle the optical interface with care, keeping dust caps on when not connected.

## FAQ

### How much does the CBO J4859B-BO fiber optic SFP 1250 Mbit/s cost, and is it available for purchase?

The price is 35.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 396 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 22.07.2026 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

## Image

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