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Chapter 2
Block Diagram
The block diagram depicts the relationships among the
interfaces and modules on the motherboard..
DDR3 1066/1333/1600
2x SO-DIMM up to 16GB
VGA
Up to 2048x1536
DVI-D
Up to 1920x1200
HDMI
Up to 1920x1200
SATA Connector
2x 6 Gbps
Voltage
Thermal
Sensor
H/W Monitor
WDT
P/S2 KB/MS
Pin Header
Embedded and Industrial Computing
Processor
Intel
Sandy Bridge series
(BGA)
Port C
PCH
Port D
HM65
SATA Port 0
SATA Port 1
Intel HD
Fintek
Serial
audio & serial board
F81865F
Multi I/O Function
IR remote
Receiver
(Optional)
3.3V/5V/V1.5V/12V
PCIe Expansion
PEG
For Riser Board (pin header)
2x PCIe !x
SPI
Flash BIOS
GbE LAN
2x PCIe
Intel 82574L
USB 2.0
USB
4x Port-A (front I/O)
2x Port-A (rear I/O)
2x Pin Header
PCIe x2
Mini PCI Express
USB x2
2x Socket
ALC886
USB x2
RS-232/422/485
LEK-IOA2
Audio Codec
UART X4
Digital I/O x4
USB x2
PCIe x2
HD Audio
SATA x1
System Components
LEK-EA2*
PCIe x1 Slot
LEK-PB2*
2x PCI Slots
PCIe I/O Function
PCI-Express 16X *1
PCI-Express 1X *2
PCI-E CLOCK
3.3V /3.3V
/5V/12V
SB
2x RJ-45
Wifi Card
3G Card +
SIM Card Reader
2x DB-9
Audio In/Out
ALC 888S
1/8 Phone Jack
Remark*
The expansion gold finger is flexible for
PCI and PCIe 1X signals (please refers to
"PCIe I/O Function" block);
For LEC-2270, the daughter board
LEK-EA2 or LEK-PB2 are selected by
different SKUs.
* LEK-EA2 is for LEC-2270E
* LEK-PB2 is for LEC-2270P2
*3
8
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