The Huawei S1720 28GWR PWR 4P AC is a managed switch that supports various features for efficient network management and connectivity. Here's a breakdown of the parameters mentioned:

1. 24 10/100/1000BASE T ports: This switch has 24 Gigabit Ethernet (GigE) ports that support three different speeds: 10 Mbps (Ethernet), 100 Mbps (Fast Ethernet), and 1000 Mbps (Gigabit Ethernet). The "T" in 10/100/1000BASE T stands for twisted pair, indicating that these ports use copper cabling.

2. 4 GE SFP ports: The switch also has 4 Gigabit Ethernet ports that use Small Form factor Pluggable (SFP) modules. SFP ports are versatile as they can support different types of modules, such as fiber optic or copper, depending on the module installed. This allows for greater flexibility in network design.

3. Fixed AC power: The switch is powered by an alternating current (AC) power supply. This means it requires a connection to a standard electrical outlet and is not designed for use with a direct current (DC) power source.

4. PoE+: PoE+ stands for Power over Ethernet Plus. This is a standard that allows the switch to provide power to connected devices over the Ethernet cables, eliminating the need for separate power sources for those devices. PoE+ can deliver more power than the standard PoE, making it suitable for devices that require more power, such as wireless access points, IP cameras, and other network devices.

5. 4P: This could refer to the number of SFP ports available on the switch, which is 4 as mentioned earlier.

6. AC: This is an abbreviation for "Access Control," indicating that the switch may have features for managing access to the network, such as VLANs (Virtual Local Area Networks), access control lists (ACLs), and other security features.

The Huawei S1720 28GWR PWR 4P AC is designed for small to medium sized businesses and can be used in various network environments where high speed connectivity and network management features are required.

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