Name: J4858B-DDO HP X121 1.25Gb/s 1000Base-SX 850nm 550m SFP Transceiver
Brand: HP
SKU: J4858B-DDO
Price: 117.30 USD
Availability: InStock
Rating: 4.8 (112 reviews)

Product Overview
The J4858B-DDO - HP X121 is an SFP transceiver module that delivers 1.25Gb/s data transmission over multimode fiber at an 850nm wavelength. It fits into standard SFP slots on network switches and devices, providing reliable connectivity up to 550 meters. This transceiver is tailored for short-range fiber optic networks where compatibility and straightforward installation are important.

General Information
Brand	HP

Technical Information
Form Factor	SFP
Media	MMF
Type	VCSEL
Power Consumption	0.8 W
Protocols	1000Base-SX, Gigabit Ethernet, 1.25Gb/s
Connector	LC Duplex
DOM Support	No

Physical Characteristics
Weight	3.00
Condition	Refurbished

Product Description
The J4858B-DDO is an SFP transceiver module designed to enable 1 Gigabit Ethernet connections over multimode fiber optic networks. It is commonly found in data centers, enterprise switches, and fiber optic network equipment where reliable short-range optical communication is required. Engineered for network administrators and IT professionals, this transceiver is built for environments that demand high-speed data transmission with minimal latency. It integrates seamlessly with a variety of networking hardware supporting the 1000Base-SX standard. Key Features Supports optical transmission at 1.25Gb/s for gigabit Ethernet networks Uses 850nm VCSEL laser technology for short wavelength communication Compatible with multimode fibers, providing up to 550 meters of reach Hot-pluggable SFP design allows easy installation and replacement Meets industry standards ensuring broad hardware compatibility This transceiver module plays a critical role in establishing efficient optical links within network infrastructures. Its reliable performance ensures consistent data throughput and reduces downtime caused by hardware incompatibility or failure. Overall, the J4858B-DDO facilitates stable network connectivity with a balance of speed and reach, making it a practical choice for various fiber optic applications.

Use Cases
The J4858B-DDO transceiver is typically deployed in network environments requiring gigabit-speed connections over short distances. It benefits IT teams managing fiber optic infrastructure in settings that need stable and efficient data transport with good reach. How It's Used: Connecting switches within data centers for high-speed interconnects Extending gigabit fiber links in enterprise LANs using multimode fiber Facilitating network access in campus environments with fiber backbone Supporting storage area networks (SANs) requiring reliable short-range optical links Replacing or upgrading existing SFP transceivers in compatible devices By enabling consistent and scalable optical connections, the J4858B-DDO supports operational efficiency in fiber-based network setups. Its straightforward integration and dependable performance help maintain steady network throughput and reduce maintenance complexity.

Tech Atlantix

J4858B-DDO HP X121 1.25Gb/s 1000Base-SX 850nm 550m SFP Transceiver

J4858B-DDO

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