The Huawei CE6865E 48S8CQ is a high performance data center switch designed to meet the demands of modern data centers. Here's a breakdown of the key parameters mentioned:

1. 48x25G SFP28: This refers to the switch having 48 ports that support 25 Gigabit Ethernet (25GbE) connections using SFP28 (Small Form factor Pluggable) modules. SFP28 is a compact, hot pluggable optical module that supports data rates up to 25 Gbps.

2. 8x100G QSFP28: The switch also features 8 ports that support 100 Gigabit Ethernet (100GbE) connections using QSFP28 (Quad Small Form factor Pluggable) modules. QSFP28 is a high density module that can support up to 4 lanes of 25 Gbps, thus enabling 100 Gbps data rates.

3. 2x AC power supply: This indicates that the switch has two AC power supply units. Having dual power supplies can provide redundancy, ensuring that the switch continues to operate in case one power supply fails.

4. 4x fan box: The switch is equipped with four fan boxes, which contain multiple fans for cooling. This design helps to maintain optimal temperatures within the switch, preventing overheating and ensuring reliable operation.

In summary, the Huawei CE6865E 48S8CQ is a robust data center switch with a high density port configuration that supports both 25GbE and 100GbE connections, providing flexibility for different network requirements. The dual AC power supply and four fan boxes contribute to the switch's reliability and durability in demanding data center environments.

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CE6820H-48S6CQ switch (48*10G SFP ,6*100G QSFP28,2 * AC power supply, 4 * fan box module, port side air outlet) data center switch：