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

1. 48 10/100/1000BASE T ports: This refers to the number of Ethernet ports on the switch that support three different speeds   10 Mbps (Ethernet), 100 Mbps (Fast Ethernet), and 1 Gbps (Gigabit Ethernet). These ports use twisted pair cables and are commonly used for connecting devices within a local area network (LAN).

2. 4 GE SFP ports: GE stands for Gigabit Ethernet, and SFP stands for Small Form factor Pluggable. These are high speed ports that use SFP (or SFP+) modules, which are hot pluggable transceivers used for both telecommunication and data communications applications. The "4" indicates that there are four such ports on the switch.

3. PoE+: This stands for Power over Ethernet Plus. It's a standard that allows network cables to be used to simultaneously transmit data and electrical power to devices such as wireless access points, IP cameras, and VoIP phones. PoE+ is an improvement over the original PoE standard, providing more power to the devices.

4. Fixed AC power: This indicates that the switch has a built in power supply that operates on Alternating Current (AC) power. The term "fixed" suggests that the power supply is not removable or interchangeable, unlike some switches that may support both AC and DC power options or have removable power supplies.

5. E AC: This could be a model or product line designation used by Huawei to differentiate this switch within their product offerings. It might stand for "Ethernet Access Control" or something similar, but without more context, it's difficult to provide a precise definition.

In summary, the Huawei S1720 52GWR PWR 4P E AC switch is a robust networking device designed to handle high speed data transmission with the added capability of powering devices through the Ethernet cables, making it a versatile choice for various enterprise networking needs.

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