ok, that's your Cable Modem; what is the make/model of the switch you use between the modem and your system?
[edit=jobeard]The User's Guide shows one version with both USB and Ethernet connections and clearly says you can connection
ONE system to each. This is unusual as more typically it is an either / or setup.
If you use the USB connection, do not place a USB hub between the Modem and the system; it only supports one USB device.
The ethernet connection will allow a ROUTER between the modem and the system, but not a switch nor a hub.
WHY? because your SB5101 does not have NAT support and also does not have DHCP support.
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