The Huawei S1720 28GWR PWR 4P E AC is a managed switch designed for small and medium sized businesses. Here is a brief introduction to the parameters mentioned:

1. 24 10/100/1000BASE T ports: This switch has 24 Gigabit Ethernet (GE) ports that support 10/100/1000BASE T Ethernet standards. These ports can be used to connect various devices such as computers, servers, printers, and other network devices.

2. 4 GE SFP ports: In addition to the 24 GE ports, the switch also has 4 Gigabit Ethernet Small Form factor Pluggable (SFP) ports. These ports allow you to connect fiber optic cables for longer distance connections or to use different types of media.

3. Fixed AC power: The switch has a built in AC power supply, which means it can be powered using a standard electrical outlet. This eliminates the need for an external power adapter or a separate power supply unit.

4. PoE+ (Power over Ethernet Plus): This switch supports PoE+, which is an enhanced version of the Power over Ethernet (PoE) standard. PoE+ allows the switch to provide both power and data to PoE enabled devices such as IP cameras, VoIP phones, and wireless access points through the Ethernet cables. This eliminates the need for separate power cables and makes the deployment of these devices more convenient.

5. Managed switch: The S1720 28GWR PWR 4P E AC is a managed switch, which means it can be configured and monitored using a network management system (NMS) or through the web based interface. This allows administrators to have more control over the network and to configure advanced features such as VLANs, QoS (Quality of Service), and security settings.

In summary, the Huawei S1720 28GWR PWR 4P E AC is a versatile managed switch with a combination of 24 GE ports and 4 SFP ports, fixed AC power, and PoE+ support, making it suitable for small and medium sized businesses that require a reliable and flexible networking solution.

Huawei S1720-10GW-PWR-2P-AC switch supports 8 10/100/1000BASE-T ports, 2 GE SFP ports, PoE+, fixed AC power：