The Huawei S1720 52GWR PWR 4X AC switch is a high performance, enterprise level switch that supports a variety of features and capabilities. Here is a brief introduction to the parameters mentioned:

1. 48 10/100/1000BASE T ports: This switch has 48 Gigabit Ethernet (GE) ports that support 10/100/1000BASE T, which means they can operate at speeds of 10 Mbps, 100 Mbps, or 1 Gbps, depending on the connected device and network conditions.

2. 4 10GE SFP+ ports: The switch also has four 10 Gigabit Ethernet (10GE) SFP+ (Small Form factor Pluggable Plus) ports, which allow for high speed data transmission over fiber optic cables. These ports can support speeds of up to 10 Gbps.

3. PoE+: PoE+ (Power over Ethernet Plus) is a technology that allows the switch to deliver power to connected devices over the Ethernet cables. This is useful for devices such as wireless access points, IP cameras, and VoIP phones that require power but do not have a separate power source.

4. Fixed AC power: The switch has a fixed AC power supply, which means it requires a standard AC power outlet to operate. This is in contrast to some switches that have a DC power supply or can be powered over Ethernet (PoE).

5. AC: This switch is designed to operate in an alternating current (AC) power environment, which is the standard for most commercial and residential electrical systems.

Overall, the Huawei S1720 52GWR PWR 4X AC switch is a versatile and high performance networking device that is suitable for a wide range of enterprise applications, including campus networks, data centers, and service provider networks.

Huawei S1720-52GWR-4P-E-AC switch supports 48 10/100/1000BASE-T ports, 4 GE SFP ports, fixed AC power：