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J4858C
Aruba X121 1G SFP LC SX Transceiver
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J4858C
Aruba X121 1G SFP LC SX Transceiver
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J4858C is a 10G SFP+ optical transceiver featuring LC connectors and designed for short-range communications over multimode fiber. It supports Ethernet protocols and delivers data rates of 10G in a compact SFP+ form factor, making it ideally suited for data center interconnects, enterprise network upgrades, and telecom applications.
Engineered with precise physical dimensions for high-density deployments, the J4858C is optimized for seamless compatibility with leading network vendors such as Cisco, Juniper, Huawei, and Arista. Its robust build, efficient power consumption, and stable performance across an operating temperature of 0 to 70°C ensure reliable operation in demanding network environments.
J4858C price is $9.87, a 97% saving from the Hpe list price of $328.78. J4858C is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for J4858C for additional pricing. Browse the full Aruba Switches Transceivers series or explore all Hpe products.
In high-density data centers, the J4858C-Aruba X121 1G SFP LC SX Transceiver provides reliable 1Gbps multimode fiber links up to 550 m between spine and leaf switches. Outcome: Delivers low-latency, high-availability connectivity, streamlines cable management, and reduces operational costs with Aruba-certified compatibility.
Enterprises use the J4858C-Aruba X121 1G SFP LC SX Transceiver to establish secure 1Gbps connections over OM3 multimode fiber spans up to 400 m between campus distribution switches. Outcome: Enables seamless VLAN extension, scalable network services, and cost-effective infrastructure deployment.
Manufacturing facilities deploy the J4858C-Aruba X121 1G SFP LC SX Transceiver to connect industrial Ethernet switches to control systems across 200 m fiber runs in high-EMI environments. Outcome: Ensures deterministic, EMI-resistant data delivery for real-time control, enhances system reliability, and minimizes maintenance overhead.
To get the detailed certification, please go to the Compliance Center.
 J4858C |  J9153D |  J9283D |  J8177D (5 Units) |  JL563A | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | SFP+ | SFP+ | SFP+ | QSFP+ | SFP |
| Data Rate | 10G | 10G | 10G | 40G | 10G |
| Connector Type | LC | LC | LC | LC | LC |
| Wavelength | 850 nm | 1310 nm | 1310 nm | 850 nm | 850 nm |
| Transmission Distance | Short-Range | Short-Range | Long-Range | Short-Range | Short-Range |
| Fiber Type | Multi-mode | Single-mode | Single-mode | Multi-mode | Multi-mode |
| Max Distance | 300 meters | 10 km | 80 km | 300 meters | 300 meters |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet |
| Network Interface | Fiber | Fiber | Fiber | Fiber | Fiber |
| Power Consumption | 3.8W | 3.5 W | 3.5 W | 5W | 1.5 W |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Compatibility | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista |
| Product Name | J4858C 10G SFP+ Optical Transceiver | J9153D 10G SFP+ Transceiver Module | J9283D LR SFP+ Transceiver | J8177D (5 Units) | JL563A 10G SFP Transceiver |
| Height | 0.12 inches | 0.25 inches | 0.28 inches | 0.57 inches | 0.8 inches |
| Width | 0.65 inches | 0.6 inches | 0.8 inches | 0.87 inches | 1.2 inches |
| Depth | 0.65 inches | 0.5 inches | 0.65 inches | 2.75 inches | 1.5 inches |
| Weight | 0.05 lbs | 0.05 lbs | 0.1 lbs | 0.25 lbs | 0.05 lbs |
SX optics delivered reliable short-range links.
Plug-and-play experience.
Stable fiber connectivity.
Consistent performance.
Good value transceiver.
The Aruba X121 1G SFP LC SX Transceiver (J4858C) is a short-range, hot-pluggable 1 GbE small form-factor pluggable (SFP) module designed for multimode fiber networks.
It uses 50/125 µm or 62.5/125 µm multimode fiber with LC duplex connectors for SX transmission.
The transceiver supports link lengths up to 550 meters over OM2 multimode fiber and up to 275 meters over OM1.
This module supports a single-channel data rate of 1 Gbps (1000 BASE-SX).