The Huawei S1720 28GFR PWR 4P AC is a managed Gigabit Ethernet switch that supports various features and provides high performance connectivity for enterprise networks. Here's a breakdown of the key parameters mentioned in the description:

1. 24 10/100/1000BASE T ports: This refers to the switch having 24 Ethernet ports that support three different speeds:

  10BASE T: Supports 10 Mbps Ethernet over twisted pair copper cabling.

  100BASE T: Supports 100 Mbps Fast Ethernet over twisted pair copper cabling.

  1000BASE T: Supports 1 Gbps Gigabit Ethernet over twisted pair copper cabling.

2. 4 GE SFP ports: GE stands for Gigabit Ethernet, and SFP stands for Small Form factor Pluggable. These are four ports that can accept SFP modules, which are small transceivers that can be used to connect the switch to other devices via fiber optic cables. Each of these ports supports Gigabit Ethernet speeds.

3. Fixed AC power: This indicates that the switch is designed to be powered by an AC power source. The term "fixed" suggests that the power supply is an integral part of the switch and cannot be easily replaced or upgraded. This is in contrast to some switches that have removable power modules.

4. PWR: This abbreviation typically stands for "Power," which in the context of a switch, could refer to the switch's ability to provide power over Ethernet (PoE) to connected devices. However, without additional context, it's not entirely clear what "PWR" refers to in this model number. It could also be part of the model identifier.

5. 4P: This likely refers to the switch having four Gigabit Ethernet ports that support full duplex communication, allowing for simultaneous transmission and reception of data.

6. AC: This confirms that the switch is powered by an alternating current (AC) power source, which is common in most enterprise and commercial settings.

The Huawei S1720 28GFR PWR 4P AC switch is designed to provide reliable and high speed connectivity for enterprise networks, with a mix of copper and fiber optic connectivity options, and the ability to be powered by a fixed AC power source.

Huawei S1720-28GFR-4P-AC switch supports 24 10/100/1000BASE-T ports, 4 GE SFP ports, fixed AC power：