The Ethernet hub pictured here decided late one night long ago
that there were too many nasty packets coming from and/or going to a
busy website, and it took it upon itself to rectify this situation
by partitioning the ports involved.
My boss initially wanted to perform
only a simple acceleration test of the unit over a wastepaper basket,
but I told him we could do better than that.
As it turns out, the unit is subject to the normal acceleration observed
of most other objects in this planet's gravitational field, and also has
a density greater than that of water. As was the case with the keyboards,
sealing up all the ventilation holes might have led to positive bouyancy,
but alas, that was not to be.
Not many divers have etherhub-recovery dives logged. I do.