Panasonic KX-TD500 System Reference Manual page 38

2.00 Expansion Shelf
Expansion Shelf is provided optionally.
Up to two Expansion Shelves (1 and 2) can be
installed on the Basic Shelf to enlarge the ability
of the system.
Each Expansion Shelf contains its own power
supply and 14 mounting spaces for any optional
card required for system expansion.
Expansion Shelf is installed on top of the basic
shelf.
Expansion Shelf consists of the following.
No.
1 POWER-for Power Unit
2 FS1 to 14 (Free Slot)
- for optional service card
Construction of Expansion Shelf (1 and 2).
P F F F
O S S S
W 1 2 3
E
R
1-E-2
Name
F F F F F F F
S S S S S S S
4 5 6 7 8 9 10
Number
1
14
F F F F
S S S S
11 12 13 14