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Cisco Catalyst 4900 Series Switches are designed and optimized for the data center and top-of-rack aggregation. They offer industry-leading wire-speed performance, low latency with Layer 2-4 switching, innovative security features, gigabit Ethernet or 10 Gigabit Ethernet uplinks, optional internal AC or DC 1 + 1 hot-swappable power supplies, and a hot-swappable fan tray with redundant fans. The Catalyst 4900 series delivers the highest reliability and serviceability in a 1-rack unit configuration.
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