Be sure the items you receive are genuine Kingston Technology products. If the Kingston name and logo are not on the front panel of your unit, it's not a genuine Kingston product. The green LED indicates the power status. The LED will light when the AC power adapter is connected from a power source to the hub. As data is received and re-transmitted, the green LED will blink.
Some network adapters require the drivers to be loaded to establish a proper link.
Make sure the correct cable type is selected. Make sure the cable is wired properly and connected on both ends. Replace the cable and try again. The solid green LED indicates a valid 100 Mbps connection has been established on the given port. The yellow LED displays the duplex or collision status of a particular port.