SFP / SFP+ Transceiver
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A hot-swappable module that converts electrical signals to optical (or vice versa) for high-speed network connections.
SFP (1 Gbps) and SFP+ (10 Gbps) transceivers plug into switches and routers, allowing flexible choice between copper and fiber connections. QSFP28 handles 100 Gbps. DAC (Direct Attach Copper) SFP+ cables offer a cheaper alternative for short rack-to-rack connections without optical conversion.