# SFP Transceiver Module StarTech.com J4858C 1000BASE-SX 10 Pack

**URL:** https://aio.lv/en/product--startech-j4858c10pkst--431299
**Data updated:** 2025-12-28 21:19 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** StarTech
**Manufacturer code:** J4858C10PKST
**EAN:** 0065030865265
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The StarTech.com J4858C compatible SFP transceiver module is designed for 1000BASE-SX applications. It supports a maximum data transfer rate of 1250 Mbit/s over multi-mode fiber optic cables with a range of up to 550m at 850nm. This 10-pack module features DDM for monitoring and is housed in a durable aluminum casing. With a low power consumption of 1W and a long MTBF of over 3.3 million hours, it ensures reliable performance for your networking needs.

## Long description

The StarTech.com J4858C 1000BASE-SX SFP Transceiver Module 10 Pack provides 1 Gbps fiber connectivity for 1000BASE-SX networks using multi-mode fiber with LC connectors. Each hot-swappable module supports a wavelength of 850 nm and a maximum optical reach of up to 550 m (1804 ft). Designed as a compatible replacement for HPE J4858C modules, this ten-pack is intended to simplify installation and maintenance in switches and routers that accept SFP modules.
Advantages
These SFP transceivers offer a compact SFP form factor with low power consumption (under 1.3 W), integrated Digital Diagnostics Monitoring (DDM), and an aluminum housing for durability. With a high MTBF of approximately 3,381,761 hours and hot-swappable operation, the modules minimize downtime during upgrades or replacements. The product is backed by StarTech.com’s lifetime warranty and lifetime multilingual technical support.
Suitable for
Upgrading or expanding 1 Gbps fiber ports on switches and routers
1000BASE-SX multimode fiber network links up to 550 m
Data center access layer and campus backbone short-range fiber connections
Key specifications
Interface type: SFP (small form-factor pluggable)
Maximum data transfer rate: 1250 Mbit/s (1.25 Gbps)
Wavelength: 850 nm
Fiber type: Multi-mode fiber (MMF)
Connector: LC duplex
Maximum distance: 550 m (1804 ft)
Power consumption: \< 1.3 W
DDM: Yes (Digital Diagnostics Monitoring)
MTBF: 3,381,761 hours
Pack quantity: 10 modules
How to use
Insert each SFP module into a compatible SFP port on an HPE-compatible switch or router while the device is powered on to take advantage of the hot-swappable feature. Connect LC-terminated multi-mode fiber cables to the module’s LC duplex connector, observing correct transmit/receive orientation. Verify link status and diagnostics through the network device management interface or use the module’s DDM readings for optical parameter monitoring.
Usage recommendations
Use OM3 or OM4 multimode fiber for optimal performance over longer reaches within the specified 550 m limit, keep fiber connectors clean to maintain signal quality, and ensure firmware and switch compatibility with HPE J4858C-compatible transceivers before deployment.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Interface type | SFP |
| Maximum data transfer rate | 1250 Mbit/s |
| Networking standards | IEEE 802.3z |
| Duplex system | Full, Half |
| Wavelength | 850 nm |
| Fiber optic connector | LC |
| Maximum transfer distance | 550 m |
| Wavelength-division multiplexing (WDM) | No |
| Digital Diagnostics Monitoring (DDM) | Yes |
| Multi-mode fiber (MMF) supported | Yes |
| SFP transceiver standard | SX |

### Network

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

### Features

| Feature | Value |
|---|---|
| Mean time between failures (MTBF) | 3381761 h |
| Product colour | Silver |
| Housing material | Aluminium |
| Hot-swap | Yes |

### Certificates

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

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 30 - 75 |
| Storage temperature (T-T) | -40 - 85 |
| Operating temperature (T-T) | 0 - 70 |

### Logistics data

| Feature | Value |
|---|---|
| Master (outer) case height | 345 mm |
| Master (outer) case width | 375 mm |
| Master (outer) case length | 419 mm |
| Products per master (outer) case | 50 pc(s) |
| Harmonized System (HS) code | 85369010 |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 215 g |
| Package depth | 181 mm |
| Package height | 35 mm |
| Package width | 127 mm |
| Number of products included | 10 pc(s) |

### Power

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

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.016 kg |
| Height | 13 mm |
| Width | 12.5 mm |
| Depth | 56.5 mm |

### Sustainability

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

## FAQ

### 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 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 StarTech.com J4858C?

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

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