14
Board Layout
Chapter 3
Embedded and Industrial Computing
Connectors and Jumpers List
The tables below list the function of each of the board
jumpers and connectors by labels shown in the above
section. The next section in this chapter gives pin
definitions and instructions on setting jumpers.
Table 3.1 Connector List for LEK-IOA2 Board
Labels Function Pin Denition Reference
Page
CN1 Microphone-in Audio Jack P15
CN2 Line-out Audio Jack P15
COM1 RS232/422/485 Serial Port P15
COM2 RS232/422/485 Serial Port P15
MIO1 Connector for connecting the COM port and
audio expansion board to the LEC-2280 main
board
P16
SCT1/SCT2 Select COM1 Protocol Setting P15
SCT3/SCT4 Select COM2 Protocol Setting P15
JP1 Select COM1 Pin No. 9 function P16
JP2 Select COM2 Pin No. 9 function P16
Note: Daughter boards such as COM ports and low-profile PCIe extension boards can only be inserted
to the mainboards that has the same version as the extension boards. The board version is shown on
top of the boards. Failure to do so may damage the system.
Table 3.2 Connector List for LEB-2280 Board
Labels Function Pin Denition Reference
Page
CMOS1 Cleaning CMOS data including RTC P16
CMOS2 Cleaning CMOS data only P16
COMSLT1 Daughter board LEK-IOA3 enable/disable P20
COMSLT2 Daughter board LEK-IG1 enable/disable P20
CN3 (optional) Optional Power Connector with Power
-ignition Control
P20
CN4 DC-in Power Connector P19
DCJK1 (optional) Optional DC Jack type of Power Connector P20
DVID1 DVI-D Connector P18
FAN1/FAN2 System Fan Connector P18
Front1 Front Panel Function Pin Header P17
HDMI1 HDMI Port P18
Ignition1(optional) Connector for power Ignition Control P20
J1 PEG16X Lane Function Selection P19
LAN1/LAN2 Ethernet Connector 1/Ethernet Connector 2 P20
LPC1 Low Pin Count Interface Reserved for factory use
KBM1 Keyboard and Mouse Connector P20
MIO1 COM and Audio Expansion Card Connector P17
MPCIE1 Mini-PCIe Connector P19
MPCIE2 Mini-PCIe Connector P19
PCIEIO1 PCI/PCIE Expansion connector for PCI or PCIe
low prole card (PCIEIO1, on the backside)
P18
PWR1 Right-angled SATA Power Connector P17
RST1 Reset Button P19
SATA1/SATA2 Serial-ATA Connector (SATA2 supports SATA-
DOM)
P16
SATA_PW2 Switch for SATA port 2 power state P21
SATA_PWR1 SATA Power Connector P17
SIM1 SIM Card Reader P17
SPI1 Serial Peripheral Interface Bus Reserved for factory use
USB1/USB2/USB3 USB Type A Connector #0,1; #2,3; #4,5 P17
USB4 USB Pin Header P17
VGA1 VGA Port P18
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