Both Digital Equipment's PEswitch 900TX and
DECswitch 900EE
can work with a snap-on
DEChub One
"power and out-of-band terminal connection" module that occasionally fails to make proper contact and crashes the switch. A locking L-bracket on the DEChub One presses on a delicate electrical hot-swap switch on the network module; we had to physically adjust the contact bar to get power on the DECswitch 900EE.
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