Functional characteristics 10/100 Mbps adaptive RJ45 port One upper port is a 100Mbps SFP fiber port Automatic port flipping (Auto MDI/MDIX) Flow control mode: full duplex adopts IEEE 802.3x standard, half duplex adopts Back pressure standard complies with IEEE 802.310Base-T and IEEE 802.3u 100/1000Base-TX standards The store-and-forward switching mechanism is adopted