7
Rev 1.0
axiomware.com
Pin
Signal
1
5V
2
5V
3
USB1-DN
4
USB2-DN
5
USB1-DP
6
USB2-DP
7
GND
8
GND
9
NO PIN - CONNECTOR INTERLOCK
10
GND
Table 6: Internal USB port pinout
4.3 SD Card
An SD card can be used for data-storage or as boot medium (main OS). SD card interface is directly
connected to main CPU. Use sdhci driver to access this feature.
4.4 SATA
J6 SATA connector can be used for drives. J7 provides 5V for SATA drives. SATA drives can be used for data
storage or as boot medium (main OS).
4.5 COM2 port
NES provides an additional COM port on J4 header. This COM is low voltage (not RS23 signal levels). Do
not apply high voltage to the pins.
Pin
Signal
1
3.3V
2
TXD
3
RXD
4
GND
5
5V
Table 7: COM 2 port
4.6 I2C and LED
The J5 connector is unpopulated. This connector can be used access the I2C bus. The pinout of the
connector is listed in Table 8.
Pin
Signal
1
3.3V
2
SCL
3
SDA
4
GND
5
Do Not Connect
6
Do Not Connect
7
Do Not Connect
