The Huawei S1720 10GW 2P E AC is a managed Ethernet switch that provides high performance and reliable connectivity for small and medium sized businesses. Here's an introduction to the parameters you mentioned:

1. 8 10/100/1000BASE T ports: This switch has eight Gigabit Ethernet (GE) ports that support 10/100/1000BASE T standards. This means each port can operate at 10 Mbps (Ethernet), 100 Mbps (Fast Ethernet), or 1 Gbps (Gigabit Ethernet) depending on the connected device's capability and the negotiated speed.

2. 2 GE SFP ports: The switch also features two Gigabit Ethernet Small Form factor Pluggable (SFP) ports. These ports allow for the use of SFP modules, which can be used for various types of network connections, such as fiber optic or copper, depending on the module type. This provides flexibility in network design and can be used for longer distance connections or different media types.

3. Fixed AC power: The switch is equipped with a fixed AC power supply, which means it is designed to work with alternating current (AC) power sources, typically the standard mains electricity found in most buildings. This is in contrast to devices that might use a DC power supply or have a modular power option that can be replaced with different types of power sources.

4. Managed Switch: The S1720 series is a managed switch, which means it can be configured and monitored through a network management system. This allows for advanced features such as VLAN configuration, quality of service (QoS) settings, and security policies to be implemented.

5. PoE Capability: Some models in the S1720 series support Power over Ethernet (PoE), which allows the switch to power devices like wireless access points or IP cameras through the Ethernet cable, eliminating the need for separate power sources for these devices.

6. Energy Efficient: The S1720 series is designed to be energy efficient, with features to reduce power consumption during periods of low network activity.

7. Easy Deployment and Maintenance: The switch is designed for ease of deployment and maintenance, with features like auto negotiation for speed and duplex settings, as well as plug and play capabilities for simple setup.

8. Reliability: Huawei switches are built with reliability in mind, featuring robust designs and high quality components to ensure stable operation in various environments.

The specific model you mentioned, the S1720 10GW 2P E AC, is part of Huawei's S1720 series, which is designed to provide a balance of performance, reliability, and cost effectiveness for small to medium sized enterprise networks.

Huawei S1720-28GWR-4X-E-AC switch supports 24 10/100/1000BASE-T ports, 4 10GE SFP+ ports, fixed AC power：