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2.4.7 COM A(J23) & COM B(J24) Connector
RS-232 port.
Pin
Signal Name
1
DCD#
3
TXD
5
GND
7
RTS#
9
RI#
Table_12 – COM Connector Pin Assignments
2.4.8 Front Header(J25) Connector
Front Panel Header Connector
Pin
Signal Name
1
+3.3V
3
HDD_ACT#
5
GND
7
RSTBTN#
9
NC
Table_13 – Front Panel Header Pin Assignments
2.4.9 PCI Express Mini Card
The EBC-3330 provides two PCI Express Mini Card (Full-Size x 1, Half-Size x 1).
PCIE_1 is Full-Size PCI Express Mini Card with only support mSATA device.
PCIE_2 is Half-Size PCI Express Mini Card. PCI Express Mini Card is a unique small size
form factor optimized for mobile computing platforms equipped with communication
applications. The small footprint connector can be implemented on SBCs, providing
the ability to insert different removable PCI Express Mini Cards. Using this approach
gives the flexibility to mount an upgradable, standardized PCI Express Mini Card
device without additional expenditure of a redesign.
Pin
Signal Name
2
RXD
4
DTR#
6
DSR#
8
CTS#
10
NC
Pin
Signal Name
2
+5V_ALW
4
GND
6
PWRBTN#
8
GND
10
NC
16
Photo_20 – COM connector
Photo_21 – Front Panel Header connector
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