This document provides specifications for the Huawei S5720S-28TP-PWR-LI-ACL network switch. It has 28 ports, including 8 PoE+ ports and 16 additional Ethernet ports. It also has 2 combo ports that can be used as fiber or Ethernet ports, along with 2 additional fiber ports. The switch has 512MB of RAM and flash memory. It is designed to operate between 0 and 45 degrees Celsius and has a noise-free operation. Contact information is provided to purchase the switch or obtain additional information from the Hi-Network company.