2-23
Chapter 2: Motherboard information
CAUTION!Neverconnecta1394cabletotheUSBconnector.Doingsowill
damage the motherboard.
NOTE: TheUSBcableispurchasedseparately.
15. USB 2.0 connectors (10-pin USB34, USB56, USB1112)
TheseconnectorsareforUSB2.0ports.ConnecttheUSBcabletothese
connectors.TheseUSBconnectorscomplywithUSB2.0specicationthat
supportsupto480Mbpsconnectionspeed.
16. SPI Flash programmable connector (8-pin SPI_1)
ThisconnectorisforSPIashprogrammachine.ConnecttheashBIOS
cable to this connector.
EMB-H81B USB2.0 connectors
USB1112 USB56
PIN 1
GND
GND
S_USB_PP3
S_USB_PN3
+5V_USB_P34
+5V_USB_P34
S_USB_PN2
S_USB_PP2
GND
GND
PIN 1
GND
GND
S_USB_PP5
S_USB_PN5
+5V_USB_P56
+5V_USB_P56
S_USB_PN4
S_USB_PP4
GND
GND
PIN 1
GND
GND
S_USB_PP11
S_USB_PN11
+5V_USB_P1112
+5V_USB_P1112
S_USB_PN10
S_USB_PP10
GND
GND
USB34
NOTE: TheashBIOScableispurchasedseparately.
EMB-H81B SPI Flash programmable connector
PIN 1
SPI_1
(NC)
SPI_MOSI
SPI_CLK
GND
(NC)
SPI_MISO
SPI_CS#
+3V_SPI