Finisar FCMJ-8521-3 Finjan hardware Optical Transmission Module

Finisar FCMJ-8521-3 Finjan hardware Optical Transmission Module Image 1

Finisar FCMJ-8521-3: 1000Base-T copper SFP transceiver.

The Finisar FCMJ-8521-3 is a 1000Base-T copper SFP transceiver, converting a switch or router’s SFP cage to an RJ45 Gigabit copper port. Copper SFPs of this type are a common way to add a copper Gigabit port to fibre-only line cards. Buyers should confirm host-platform copper-SFP compatibility (including auto-negotiation support) before ordering. Tech-Star (UK-based, shipped worldwide) supplies optical transceivers. Please contact our sales team for current stock and pricing. Optics are keyed to the equipment they were commissioned with, so a module that matches the original is usually easier to fit than a newer substitute. Tech-Star can confirm compatibility against your platform before you order.

Worldwide supply. We export new and refurbished telecoms and networking equipment internationally. International buyers welcome, request a delivered quote in your currency. Supply subject to export checks.

From the same manufacturer

Frequently asked questions

Is the Finisar FCMJ-8521-3 refurbished or new?
Tech-Star supplies both new and refurbished Finisar FCMJ-8521-3. Refurbished items are tested and graded against manufacturer specifications; the condition is confirmed at quote.
What warranty is included with the Finisar FCMJ-8521-3?
Refurbished Finisar FCMJ-8521-3 comes with a 90-day parts and labour warranty as standard. Extended warranty options are available on request.
How do I get a price for the Finisar FCMJ-8521-3?
Pricing reflects current stock and lead time, so we quote per enquiry. Submit the part number through the contact form for a quote, typically within one business hour.
Can the Finisar FCMJ-8521-3 be returned?
Returns are accepted within 14 days of delivery in line with our return policy. A restocking fee may apply for opened items.
How quickly can the Finisar FCMJ-8521-3 be delivered?
Lead time depends on current stock. UK-based items typically ship the next business day; sourced items vary. We confirm lead time at quote.

Key FeaturesGenuine Finjan component; 1000Base-T Copper SFP; compatible with its host system
ApplicationsSystem maintenance; component redundancy and spares; capacity expansion
CompatibilityCompatible host systems
Specifications1000Base-T Copper SFP
PlatformFinjan hardware
ManufacturerFinisar

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