If only one device works, try power-cycling the hub by unplugging it for 10 seconds.
For more detailed support on older hardware, you can check the Linksys Support Home or browse manuals on community sites like ManyManuals . Linksys Network Hub Nh1005 Manual Pdf txt
While a standalone PDF for the NH1005 specifically can be hard to find due to its age, it belongs to the EtherFast® 10/100 Workgroup Hubs series, which shares identical setup and operation. If only one device works, try power-cycling the
Use standard Cat5e or better Ethernet cables to connect your computers, printers, or other network devices to any of the 5 ports. If only one device works