[ICOM] Another R-7000 question

[Bonddaleena at aol.com]

Hello. I was looking at my R-7000 last night and it appears 'different'  from 
the Owner's Manual.
In the OM, there is a picture of a connector and jumper located on the rear  
panel where the AC connector reside. The OM states "your radio will not have  
this connector". Strange, mine has it.
Looking at the schematic, this connector (P4 on the Regulator Unit) simply  
has the jumper P2 plugged into it. It supplies 12 VDC from the internal  P/S  
to the P1 / P11 connector. 
 
My question is this: Is it unusual for an R-7000 to be able to be powered  by 
12 VDC instead of AC?
Does anyone else have this DC port on their radio?
 
Just curious.....
 
ron
 
N4UE