The DES-1016D comes with 16 10/100 Mbps ports, allowing a small workgroup to flexibly integrate to Ethernet & Fast Ethernet. These intelligent ports detect the network speed & auto-negotiate between 100BASE-TX & 10BASE-T, as well as between full & half-duplex. All ports support flow control. This function minimizes dropped packets by sending out collision signals when the port's receiving buffer is full.