ECS P33T-A Instruction Manual page 21

F_USB1~2: Front Panel USB headers
The motherboard has four USB ports installed on the rear edge I/O port array.
Additionally, some computer cases have USB ports at the front of the case. If you
have this kind of case, use auxiliary USB connector to connect the front-mounted
ports to the motherboard.
Pin Signal Name
1
USBPWR
2
USBPWR
3
USB_FP_P0-
4
USB_FP_P1-
5
USB_FP_P0+
6
USB_FP_P1+
7
GND
8
GND
9
Key
10
USB_FP_OC0
Please make sure that the USB cable has the same pin assignment as
indicated above. A different pin assignment may cause damage or system
hang-up.
CD_IN1: Analog Audio Input connector
Pin Signal Name
1
CD_L
2
GND
3
GND
4
CD_R
SPI_ROM: SPI ROM header
This 4 Mb ROM contains the programmable BIOS program.
Pin Signal Name
1
CHIP SELECT
2
VCC
3
DATA OUTPUT
4
HOLD
5
WRITE PROTECT
6
CLOCK
7
CND
8
DATA INPUT
Installing the Motherboard
Function
Front Panel USB Power
Front Panel USB Power
USB Port 0 Negative Signal
USB Port 1 Negative Signal
USB Port 0 Positive Signal
USB Port 1 Positive Signal
Ground
Ground
No pin
Overcurrent signal
Function
CD In left channel
Ground
Ground
CD In right channel
Function
Select chip
VCC
data output
hold
BIOS write protect
clock
CND
data input
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