Name: FCMJ-8521-3 Finisar Corporation 1.25Gbps 1000Base-T 100m Copper Connector SFP mini-GBIC Network Transceiver Module
Brand: Finisar
SKU: FCMJ-8521-3
Price: 64.00 USD
Availability: InStock
Rating: 4.8 (114 reviews)

Product Overview
The FCMJ-8521-3 Finisar transceiver module provides 1.25Gbps Gigabit Ethernet connectivity over copper cabling, fitting into SFP slots for easy integration. It serves as a reliable solution for linking network devices over distances up to 100 meters using standard twisted-pair cables, making it suitable for many enterprise and data center applications where fiber optics are not required or practical.

General Information
Brand	Finisar
Part Number	FCMJ-8521-3

Technical Information
Form Factor	SFP
Media	Cat 5e/6/6a (UTP)
Protocols	1000Base-T, Gigabit Ethernet, 1.25Gbps
Connector	RJ-45
DOM Support	No

Physical Characteristics
Weight	3.00
Condition	Refurbished

Product Description
The FCMJ-8521-3 is a network transceiver module designed to enable Gigabit Ethernet over copper cabling. It is commonly used in network switches, routers, and servers where standard RJ-45 copper connections are needed for data transfer up to 1.25Gbps. Built for environments requiring cost-effective and straightforward network connections, this module fits into SFP slots and works with existing copper infrastructure without the need for fiber optics. Network administrators, IT professionals, and system integrators often find it useful for extending network reach within office buildings, data centers, and campus networks. Key Features Supports standard 1000Base-T over copper cables up to 100 meters Operates at 1.25Gbps data rate for Gigabit Ethernet Plug-and-play SFP mini-GBIC form factor for easy deployment Compatible with a wide range of network hardware supporting mini-GBIC modules Low power consumption suitable for dense networking setups This transceiver is typically deployed in enterprise networks, helping connect switches and devices without the need for fiber optic cabling. It offers a practical way to maintain high-speed connections while leveraging existing copper infrastructure, minimizing costs and complexity.

Use Cases
The FCMJ-8521-3 Finisar transceiver module is commonly deployed in enterprise and mid-sized office networks where existing copper infrastructure is leveraged for Gigabit Ethernet connectivity. It is suitable for IT environments requiring reliable, cost-effective network extension over standard twisted-pair cabling without the need for fiber-optic installations. How It's Used: Connecting switches and routers within enterprise wiring closets to support high-speed data flow in corporate LANs. Extending network segments in SMB environments using existing copper cabling for cost-efficient Gigabit Ethernet upgrades. Facilitating edge computing devices' connectivity in industrial or campus environments where fiber deployment is impractical. Linking servers and storage clusters in data centers over short distances without fiber optics, optimizing infrastructure use. Supporting remote office network setups by utilizing existing Ethernet cabling for network device interconnection. By enabling Gigabit Ethernet connectivity over copper with a compact SFP form factor, this module supports scalable network growth and simplifies infrastructure management. It helps maintain consistent performance in environments where fiber optics are not necessary or feasible, ensuring operational continuity across diverse IT topologies.

Tech Atlantix

FCMJ-8521-3 Finisar Corporation 1.25Gbps 1000Base-T 100m Copper Connector SFP mini-GBIC Network Transceiver Module

FCMJ-8521-3

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