Comfort keyboard has short lifespan

7.31: mis.addn/ergo.kybd/failure after plugging into mac a second time:
. this time on the mac I was trying it from my bedside,
and doing it without the ups for the first time .
. the first time it seemed like the touchpad wasn't registering,
so I replugged in both,
and that's when the ergo.kybd stopped registering .
. it was obtained through this discount place that took forever
-- as if they were waiting for returns they could refurbish!