I recently changed my computer, router and modem. I now use HP computer with windows 8.1 operating system and uses Motorola SURFboard SBG6580 (modem and router combo). I have connected all former devices to the new network without problems with the exception of Roku M1001. It sees the wireless network but unable to connect to it. I have even reset it to the original factory configuration but still will not connect. Please help.

The Soundbridge only supports wireless 802.11B. Is your router set for B or mixed mode?

Yes my router is set to B mode only

Which version of firmware is running on the SB and which if any wireless encryption are you running on the router?