What is the difference between Huawei S5700S-52P-PWR-LI-AC and Huawei S5700S-52P-LI-AC?

PWR-LI-AC supports POE port power supply, which can remotely power wireless APs, cameras, IP phones and other devices. Note that the transmission distance of the network cable is usually not more than 100 メートル, and it is within 70 meters in actual use.