# SFP Transceiver Module ESUS IT J4859D-C LC 1 Gbps 10 km

**URL:** https://aio.lv/en/product--esus-it-j4859d-c--12022065
**Data updated:** 2026-03-11 20:57 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** ESUS IT
**Manufacturer code:** J4859D-C
**EAN:** 4251760500019
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 27.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 23.13 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--esus-it-j4859d-c--12022065

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

Replacement SFP transceiver module ESUS IT J4859D-C with LC connector supporting 1 Gbps data rate and up to 10 km optical reach. Designed for use in switches, routers and optical network equipment that accept standard 1 G SFP modules. Suitable for extending fiber links in enterprise LANs, data centers and telecom access networks.

## Long description

ESUS IT J4859D-C LC 1 Gbps 10 km SFP transceiver module is a single‑mode fiber optic SFP designed to provide a 1 Gbps data link over distances up to 10 kilometers using an LC duplex connector. The module is compatible with standard 1 G SFP slots in switches, routers and optical network equipment that support SFP transceivers, and is intended as a replacement module to restore or extend fiber connections in enterprise LANs, data centers and access network links.
Advantages
The transceiver offers a compact SFP form factor that fits industry-standard SFP cages and hot‑swap slots, enabling quick installation and replacement without powering down equipment. With a 1 Gbps data rate and single-mode optical design it supports long-reach links up to 10 km while maintaining low power consumption and stable signal performance. The LC duplex connector ensures secure fiber coupling and broad interoperability with LC-terminated fiber patch cords and adapters.
Suitable for
 Extending single-mode fiber links between switches and routers in enterprise networks
 Interconnects in data centers requiring 1 Gbps optical uplinks
 Access network and telecom links where up to 10 km reach is required
 Replacement of failed or incompatible SFP modules in optical equipment that supports standard 1 G SFP transceivers
Key specifications
 Form factor: SFP (small form-factor pluggable)
 Data rate: 1 Gbps (full duplex)
 Fiber type: single-mode
 Maximum optical reach: up to 10 km (depending on fiber and link conditions)
 Connector type: LC duplex
 Interface: 1000BASE-LX/LH compatible
 Power consumption: low-power SFP class (typical values depend on device)
How to use
Insert the SFP transceiver into an empty, compatible SFP slot on your switch, router, or optical device until it clicks into place. Connect LC duplex fiber patch cords to the module using correct polarity (Tx/Rx). Verify link status through the host device management interface and confirm the module is recognized at 1 Gbps. If replacing an existing transceiver, remove the old module by releasing the latch and pulling it straight out, then install the replacement while the device is powered if hot-swap capability is supported.
Usage recommendations
Use single-mode fiber with appropriate attenuation and proper LC patch cords for distances up to 10 km. Check device documentation for compatibility and any required firmware or configuration settings. Avoid bending fiber beyond recommended radii and protect the transceiver from dust by using dust caps when not connected.

## FAQ

### How much does the SFP Transceiver ESUS IT J4859D-C 1 Gbps 10 km cost, and is it available for purchase?

The price is 27.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 50 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 06.07.2026 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, 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 ESUS IT 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 ESUS IT 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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