S2700-18TP-EI-A VS S2700-26TP-EI-AC, What’s the Difference

What is the difference between the Huawei S2700-18TP-EI-A and S2700-26TP-EI-AC?

S2700-26TP-EI-AC：24 FE ports, 2 GE Combo ports. Switching capacity: 8.8 Gbit/s. Packet forwarding capacity: 6.55 Mpps

S2700-18TP-EI-A： 16 FE ports, 2 GE Combo ports. Switching capacity: 7.2 Gbit/s. Packet forwarding capacity: 5.36 Mpps

They are all AC power: 110/220V.

Compare the price between them throught the video