Signal name, Cn1a, cn1b: com1(up) and com2(down) connector, Cn2a, cn2b: vga(up) and dvi(down) connector – IBASE MI958 User Manual
Page 18: Cn6: gbe_1 rj-45 and usb1/2 ports, Cn9: gbe_2 rj-45 and usb3/4 ports, Cn12: audio connector, Cn7,cn8,cn10, cn11: serial ata connectors, Cn1a, cn1b: com1(up) and com2(down)connector

INSTALLATIONS
CN1A, CN1B: COM1(up) and COM2(down)Connector
[
Signal Name
Pin #
Pin #
Signal Name
DCD 1
6 DSR
RXD 2
7 RTS
TXD 3
8 CTS
DTR
4
9
RI
GND 5
10
Not
Used
[[[[
CN2A, CN2B: VGA(UP) and DVI(DOWN) Connector
CN6: GbE_1 RJ-45 and USB1/2 Ports
CN9: GbE_2 RJ-45 and USB3/4 Ports
CN12: Audio Connector
The audio connector, from top to bottom, is composed of Line in, Line
out and Microphone jacks.
CN7,CN8,CN10,CN11: Serial ATA Connectors
FAN1: System Fan Power Connector
FAN1 is a 3-pin header for system fan. The fan must be a 12V (500mA).
Pin #
Signal Name
1 Ground
2 +12V
3 Rotation
detection
FAN2: CPU Fan Power Connector
FAN2 is a 3-pin header for the CPU fan. The fan must be a
12V(500mA).
Pin #
Signal Name
1 Ground
2 +12V
3 Rotation
detection
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MI958 User’s Manual