18
92
User Defined IO
UDNIO4
User Input/Output Port 4
93
Ground
GND
Ground
94
NC NC
Not
Connected
95
NC NC
Not
Connected
96
Ground
GND
Ground
98
Power Switch
PWERBTN_HDR
Powers on the system
97
USB 2.0, Port 9
USB_PWR9
USB 2.0 +5V Power
99
USB 2.0, Port 9
USB_N9
USB 2.0 Data Negative
100
USB 2.0, Port 9
USB_P9
USB 2.0 Data Positive
101
Ground
GND
Ground
102
Control/Indicator
SATA_LED#
SATA LED
101
Ground
GND
Ground
103
NC
NC
NC
101
Ground
GND
Ground
104
Control/Indicator
ERASE- L
GPIO Signal for SSD Secure Erase
101
Ground
GND
Ground
105
Power
P3V3_S
+3.3 Volts Standby
106
Power
P3V3_S
+3.3 Volts Standby
107
Serial 5
RS422_TX5_N
Transmit Data Negative
108
Serial 5
RS422_TX5_P
Transmit Data Positive
109
Serial 5
RS422_RX5_N
Receive Data Negative
110
Serial 5
RS422_RX5_P
Receive Data Positive
111
Serial 7
RS422_TX7_N
Transmit Data Negative
112
Serial 7
RS422_TX7_P
Transmit Data Positive
113
Serial 7
RS422_RX7_N
Receive Data Negative
114
Serial 7
RS422_RX7_P
Receive Data Positive
116-
120
NC
NA
NA
115
Serial 0
RS422_TX0_N
Transmit Data Negative
122
Serial 0
RS422_TX0_P
Transmit Data Positive
123
Serial 0
RS422_RX0_N
Receive Data Negative
124
Serial 0
RS422_RX0_P
Receive Data Positive
125
Ground
GND
Ground
126
Serial 2
RS422_TX2_N
Transmit Data Negative
127
Serial 2
RS422_TX2_P
Transmit Data Positive
128
Serial 2
RS422_RX2_N
Receive Data Negative
121
Serial 2
RS422_RX2_P
Receive Data Positive
Table 2-4: P2 Connector Pin Definitions and Signal Maps
P2 Pin
Interface
Signal
Signal Description