If only one device works, try power-cycling the hub by unplugging it for 10 seconds.
Plug the external AC power adapter (typically 9V or 12V) into the hub's power jack, then into a wall outlet. Linksys Network Hub Nh1005 Manual Pdf txt
For more detailed support on older hardware, you can check the Linksys Support Home or browse manuals on community sites like ManyManuals . If only one device works, try power-cycling the
Are you trying to connect this hub to a or just between two older computers? EtherFast® 10/100 Workgroup Hubs - Linksys If only one device works
Use standard Cat5e or better Ethernet cables to connect your computers, printers, or other network devices to any of the 5 ports.