memory seat switch question

[shogun]

To Bill R. and the others who know.
Is this a switch for memory seats or only for electric seats?
http://www.lehrmangroup.com/rickard/seatswitch.html

I have a problem to identify this.
SWITCH SEAT ADJUSTING FRONT LEFT 02/1989 61311374217 $78.96
SWITCH SEAT ADJUSTING FRONT LEFT 02/1989 09/1995 61311388110 $78.96
SWITCH SEAT ADJUSTING FRONT RIGHT 1 02/1989 09/1995 61311388111 $78.96
FOR VEHICLES WITH
MEMORY SWITCH SEAT ADJUSTING FRONT LEFT 1 02/1989 61311374492 $111.04
SWITCH SEAT ADJUSTING FRONT LEFT 1 02/1989 61311374492 $111.04
----------------------------
So it clearly says
A) switch seat adjustment

and then especially

for vehicles with memory.

The problem is I do not know the difference, all my cars have memory seats, I have never seen a switch for "without memory".
Someone is asking me to show him the innards of one WITH memory switch system.
Or what could be the difference.
He bought most of the items for memory system including the module under the seat, but the switches are the old ones from electric seats only. So what to change in the original switch?

Thanks a lot