# SFP Transceiver Module StarTech.com J4859C

**URL:** https://aio.lv/en/product--startech-j4859cst--431302
**Data updated:** 2025-12-28 21:19 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** StarTech
**Manufacturer code:** J4859CST
**EAN:** 0065030865296
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 61.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 50.82 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--startech-j4859cst--431302

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.99 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

The StarTech.com HP J4859C Compatible SFP Transceiver Module offers a 1000BASE-LX interface for single and multi-mode fiber optics. With a data transfer rate of 1250 Mbit/s and a range of up to 10km at 1310nm, this silver module ensures reliable Gigabit Ethernet connectivity. It features DDM for monitoring, has a low power consumption of 1W, and is certified by FCC, UL, and CE. Dimensions: 14mm x 57mm x 13mm.

## Long description

The SFP Transceiver Module StarTech.com J4859C is a compatible replacement for HPE J4859C modules, providing 1 GbE connectivity over single-mode and multi-mode fiber for 1000BASE-LX networks. Operating at a wavelength of 1310 nm with a maximum nominal data rate of 1.25 Gbps (1 Gbps working throughput), the module supports distances up to 10 km on single-mode fiber and up to 1 km on multi-mode fiber. It uses an LC connector, consumes less than 1 W, includes Digital Diagnostics Monitoring (DDM) and is hot-swappable for easy field upgrades.
Advantages
This StarTech.com SFP module offers compatibility with HPE devices while providing DDM support for real-time monitoring, low power consumption, and hot-swappable installation to minimize network downtime. The module is compact and FCC/UL/CE certified, and StarTech.com provides a lifetime warranty and multilingual technical support.
Suitable for
1 GbE fiber uplinks between switches and routers
Campus and enterprise backbone links up to 10 km on single-mode fiber
Short-distance fiber connections within wiring closets or data centers using multi-mode fiber (up to 1 km)
Replacement or spare inventory for HPE J4859C-compatible equipment
Key specifications
Interface type: SFP (LC)
Wavelength: 1310 nm
Maximum data transfer rate: 1.25 Gbps (supports 1 Gbps operation)
Maximum distance: 10 km (single-mode), 1 km (multi-mode)
Power consumption: \<1 W
MTBF: 3,092,408 hours
Digital Diagnostics Monitoring (DDM): Yes
Dimensions: 14 × 57 × 13 mm
Weight: 0.016 kg
How to use
Ensure the transceiver is compatible with your HPE switch or router and that the device is powered on. Insert the SFP module into an available SFP port until it clicks into place. Attach the appropriate LC-terminated single-mode or multi-mode fiber cable, taking care to observe correct transmit/receive orientation. The module is hot-swappable, so it can be installed or removed without powering down the host equipment; allow the device to negotiate link parameters and verify link status on the host interface.
Usage recommendations
For reliable performance, use quality LC fiber cables matched to the selected fiber type (single-mode or multi-mode), keep fiber connectors clean, and verify supported transceiver firmware/compatibility on HPE devices. Observe standard ESD precautions when handling the module.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | SFP |
| Maximum data transfer rate | 1250 Mbit/s |
| Networking standards | IEEE 802.3z |
| Auto MDI/MDI-X | Yes |
| Duplex system | Full |
| Wavelength | 1310 nm |
| Fiber optic connector | LC |
| Maximum transfer distance | 10000 m |
| Digital Diagnostics Monitoring (DDM) | Yes |
| Multi-mode fiber (MMF) supported | Yes |

### Network

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

### Certificates

| Feature | Value |
|---|---|
| Certification | FCC, UL, CE |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 5 - 95 |
| Storage temperature (T-T) | -40 - 85 |
| Operating temperature (T-T) | 0 - 70 |

### Logistics data

| Feature | Value |
|---|---|
| Master (outer) case height | 355 mm |
| Master (outer) case width | 347 mm |
| Master (outer) case length | 412 mm |
| Products per master (outer) case | 100 pc(s) |
| Harmonized System (HS) code | 85369010 |

### Features

| Feature | Value |
|---|---|
| Mean time between failures (MTBF) | 3092408 h |
| Product colour | Silver |
| Hot-swap | Yes |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 45 g |
| Package depth | 93 mm |
| Package height | 32 mm |
| Package width | 118 mm |
| Number of products included | 1 pc(s) |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.016 kg |
| Height | 13 mm |
| Width | 14 mm |
| Depth | 57 mm |

### Power

| Feature | Value |
|---|---|
| Power consumption (typical) | 1 W |

### Sustainability

| Feature | Value |
|---|---|
| Sustainability certificates | RoHS |

## FAQ

### How much does the SFP Transceiver Module StarTech.com J4859C cost, and is it available for purchase?

The price is 61.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 52 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 13.07.2026 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: Cash payment, 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 StarTech 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 StarTech 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, maximum data transfer rate, 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.

### Where can I download the instructions for SFP Transceiver Module StarTech.com J4859C?

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.

## Image

https://aio.lv/img/cache/product/431302/54584037_large.webp