[BC] Two input router?

[Art Reed]

All,

Several months ago there was some discussion about a computer router /
switch that could accept two different inputs.  I have a situation where I
would like to use two different ISP's (one wired, one wireless) in a
combined mode, such that when both services are up, the router would serve
up shared bandwidth, and if one service failed, the router would continue to
deliver the other, in sort of an automatic fail-over arrangement.

I can't remember the unit that was discussed, but it was ~$400.00.  I don't
need lots of outputs, 4 would be plenty.

Art Reed