Chapter 2: Installation
2-7
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2-6
Connecting Cables
The primary power supply connec-
tor on the P3TDDR meets the SSI
(Superset ATX) 24-pin specifica-
tions, however, it also supports an
ATX 20-pin connector. Refer to
T a b l e 2 - 1 a f o r p i n d e f i n i t i o n s .
(Also see Figure A below for con-
nector orientation). If a 20-pin
connector is used, please refer to
Figure B below for connector ori-
entation and Table 2-1c for stan-
dard wiring colors.
Pin 1
Pin 1
Pin 13
Pin 10
Pin 11
Pin 20
Power Supply Connector
T a b le 2 -1 b
A T X P o w e r S u p p ly 2 0 -p in C o n n e c to r P in
D e fin itio n s
P in # D e fin itio n
1 1 +3 .3 V
1 2
-1 2 V
1 3 C O M
1 4
P S _ O N
1 5
C O M
1 6
C O M
1 7
C O M
1 8
-5 V
1 9
+5 V
2 0
+5 V
P in # D e fin itio n
1 + 3 .3 V
2 + 3 .3 V
3 C O M
4 + 5 V
5 C O M
6 + 5 V
7 C O M
8 P W -O K
9 5 V S B
1 0 + 1 2 V
C o lo r D efin itio n
O ra n g e +3.3 V
B la ck Co m
R e d 5V
W h ite Po we r O K
Y e llo w +1 2 V
P u rp le 5V sta n d b y
B ro wn -5V
(F o r re fe re nce o n ly)
T a b le 2 -1 c
P S C o lo r D e fin itio n s
T a b le 2 -1 a
A T X P o w e r S u p p ly 2 4 -p in C o n n e c to r
P in D e fin itio n s (A T X P O W E R )
P in N u m b e r D e fin itio n
1 3
+3 .3 V
1 4
-1 2 V
1 5
C O M
1 6
P S _ O N #
1 7
C O M
1 8
C O M
1 9
C O M
2 0
R e s(N C )
2 1
+5 V
2 2
+5 V
2 3
+5 V
2 4
C O M
P in N u m b e r D e fin itio n
1 +3 .3 V
2 +3 .3 V
3 C O M
4 +5 V
5 C O M
6 +5 V
7 C O M
8 P W R _ O K
9
5 V S B
1 0
+1 2 V
1 1
+1 2 V
1 2
+3 .3 V
Pin 24
Pin 12
Figure A: SSI 24-pin power cable
Figure B: SSI 20-pin power cable
Infrared Connector
The header at J10 is for infrared
devices. See the table on the right
for pin definitions. Refer to the
Technical Support section of our
web page for information on the
infrared devices you can connect
to the system.
P in
N u m b e r
1
2
3
4
5
D e fin itio n
+5 V
K e y
IR R X
G ro u n d
IR T X
In f ra re d P in
D e fin itio n s ( J 1 0 )
