| Ports & interfaces | |
| Interface | Fiber |
| Connectivity technology | Wired |
| Weight & dimensions | |
| Weight | 18 g |
| Height | 13 mm |
| Width | 14 mm |
| Depth | 57 mm |
| Energy management | |
| Power consumption (typical) | 1 W |
| Operational conditions | |
| Operating relative humidity (H-H) | 30 - 75% |
| Storage temperature (T-T) | -40 - 85 °C |
| Operating temperature (T-T) | 0 - 70 °C |
| Networking | |
| Full duplex | ![]() |
| Maximum data transfer rate | 1250 Mbit/s |
| Ethernet LAN | ![]() |
| Ethernet LAN data rates | 1000 Mbit/s |
| Packaging data | |
| Package weight | 46 g |
| Package depth | 114 mm |
| Package height | 33 mm |
| Package width | 93 mm |
| Quantity per pack | 1 pc(s) |
| Certificates | |
| Certification | CE, FCC, UL |
| Compliance certificates | RoHS |
| Packaging content | |
| Quantity per pack | 1 pc(s) |
| Other features | |
| Housing material | Aluminum |
| Design | |
| Internal | ![]() |
| Form factor | SFP |
| Product colour | Silver |
| Performance | |
| Interface type | SFP |
| Maximum data transfer rate | 1250 Mbit/s |
| Networking standards | IEEE 802.3z |
| Wavelength | 850 nm |
| Fiber optic connector | LC |
| Duplex system | Full, Half |
| Maximum transfer distance | 550 m |
| SFP transceiver type | Fiber optic |
| Wavelength-division multiplexing (WDM) | ![]() |
| Digital Diagnostics Monitoring (DDM) | ![]() |
| Multi-mode fiber (MMF) supported | ![]() |
| Single-mode fiber (SMF) supported | ![]() |
| SFP transceiver standard | SX |
| Features | |
| Mean time between failures (MTBF) | 3381761 h |
| Data transfer rate | 1.25 Gbit/s |
| Product colour | Silver |
| Housing material | Aluminium |
| Hot-swap | ![]() |
| Connector 1 | LC Duplex |
| Logistics data | |
| Country of origin | China |
| Master (outer) case height | 352 mm |
| Master (outer) case width | 340 mm |
| Master (outer) case length | 430 mm |
| Products per master (outer) case | 100 pc(s) |
| Harmonized System (HS) code | 85369010 |
| EAN | 0065030865289 |
| Warranty | 30 years |
The StarTech J4858CST HPE-compatible 1000BASE-SX MM SFP fibre transceiver (LC duplex, 850 nm, up to 550 m) provides optical connectivity in enterprise environments. This module installs directly into SFP slots on supported HPE switches and routers, enabling communication between servers and network segments over multi-mode cabling. The transceiver supports data rates of 1250 Mbit/s and uses full-duplex transmission for simultaneous data sending and receiving.
The unit complies with the IEEE 802.3z standard for integration with short-haul infrastructure. It operates as a fibre interface, maintaining physical separation from copper-based Ethernet segments. As it is designed for multi-mode environments, single-mode transmission is not supported. These specifications allow IT administrators to manage dedicated data centre links.
Key Features:- Digital Diagnostics Monitoring (DDM) for real-time health and status tracking
- Aluminum housing to protect internal components during installation
- Typical power consumption of 1 W to minimise the electrical load on host switches
- 1000 Mbit/s Ethernet LAN data rates for gigabit network traffic
Estimated delivery: 27.08 - 31.08
Today: 10:00 - 18:00
Estimated delivery: 27.08 - 31.08
Today: 09:00 - 17:00
Estimated delivery: 27.08 - 31.08
Today: 10:00 - 17:00
Estimated delivery: 27.08 - 31.08
Today: 10:00 - 18:00
Estimated delivery: 27.08 - 31.08
Today: 10:00 - 17:00
Estimated delivery time: 27.08 - 31.08
Estimated delivery time: 27.08 - 30.08
Estimated delivery time: 28.08 - 31.08
Estimated delivery time: 28.08 - 31.08
Estimated delivery time: 28.08 - 30.08
Estimated delivery time: 27.08 - 31.08
Estimated delivery time: 27.08 - 31.08
Estimated delivery time: 28.08 - 30.08


