D-Link DSL-2740R User Manual page 19

Section 2 - Installation
Hub or Switch to Router Connection
Connect the router to an uplink port (MDI-II) on an Ethernet hub or switch
with a straight-through cable as shown in this diagram. If you wish to
reserve the uplink port on the switch or hub for another device, connect
to any of the other MDI-X ports (1x, 2x, etc.) with a crossed cable.
Computer to Router Connection
You can connect the router directly to a 10/100BASE-TX Ethernet adapter
card (NIC) installed on a PC using the Ethernet cable provided as shown
in this diagram.
D-Link DSL-2740R 19