hissing from a hub - test-drb@ccmp.vtda.org

24 Nov 2003

...
 From: "Pete Turnbull"
&lt;pete(a)dunnington.u-net.com&gt;
On Nov 24,  9:08, Dwight K. Elvey wrote:
  Hi
  Pairs of switching power supplies often interreact to
 make a sound like hissing. There may not be anything
 wrong with it. Still the electrolytic leaking might
 be a problem. 
OfficeConnect hubs, switches, whatnots, are very small devices that
have an external wall-wart PSU and no fan, and are normally absolutely
silent.

Ok, how about one of those little beeper/speakers? Does
it have one of those? Otherwise, it is most likely an
electrolytic.
Dwight