2023-09-09.  SMS.
            DEChub 90 Unit Power Connections

------------------------------------------------------------------------

   When used independently (not in a DEChub), most Work Group Units use
a 5V power adapter in the H7082 family (H7082-AA (US), H7082-AB (IEC),
or H7082-ABG (IEC?)).  This includes all DECserver 90 models, and the
DECrepeater 90T+ (DETMR).

   Work Group Units which require both 5V and 12V use a dual-voltage
power adapter in the H7827/H7867 family.  This includes the DECrepeater
90TS (DETMI).

   Pin-outs for the power connectors are shown below.  Note that the
5V-only and dual voltage adapters use the same 7-pin Mini-DIN connector,
but connecting the wrong adapter to a Work Group Unit might easily cause
damage, as the pin-outs for the two types are electrically incompatible.

   Note that an 8-pin male Mini-DIN connector may be used; the extra pin
falls into the polarizing key hole in the female (or may be cut off).

------------------------------------------------------------------------

               Connectors (viewed from face)

                      H7082, 5V-Only

           DECserver            H7082 Power Adapter
            Female                     Male

              -_-                       -_-
         +---o o o---+             +---o o o---+
    (0)--+--o [ ] o--+--(5)   (5)--+--o [ ] o--+--(0)
         +----o o----+             +----o o----+

------------------------------------------------------------------------

                     H7827, 5V and 12V

        DECrepeater 90TS       H7827 Power Adapter
             Female                   Male

    (0)---\   -_-                       -_-   /---(0)
           `-o-o-o                     o-o-o-'
         +--o [ ] o--+             +--o [ ] o--+
   (12)--+----o o----+--(5)   (5)--+----o o----+--(12)