3 jumper setting and pin assignment, Vga1: internal vga connector, Cn3: digital visual interface – Lanner LEC-7900 User Manual
Page 12: Cn4: hdmi, J5 / j6 : audio out

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2.3 Jumper setting and Pin
Assignment
VGA1: Internal VGA Connector
Pin No. Description Pin No. Description Pin No. Description
1
CRT-R
6
GND
11
NC
2
CRT-G
7
GND
12
V_SDAT
3
CRT-B
8
GND
13
HSYNC
4
NC
9
VCC
14
VSYNC
5
GND
10
GND
15
V_SCLK
CN3: Digital Visual Interface
Pin No. Description Pin No. Description Pin No. Description
1
DATA2-
9
DATA1-
17
DATA0-
2
DATA2+
10
DATA1+
18
DATA0+
3
GND
11
GND
19
GND
4
DATA4-
12
DATA3-
20
DATA5-
5
DATA4+
13
DATA3+
21
DATA5+
6
DDC_CLK
14
VCC
22
GND
7
DDC_DAT
15
GND
23
CLK+
8
N.C
16
HP_DET
24
CLK-
CN4: HDMI
Pin No.
Description
Pin No.
Description
Pin No.
Description
1
TMDS Data 2+
9
TMDS Data 0-
17
GND
2
SHIELD
10
TMDS CLK+
18
5V
3
TMDS Data 2-
11
SHIELD
19
HPD
4
TMDS Data 1+
12
TMDS CLK-
5
SHIELD
13
CEC
6
TMDS Data 1-
14
NC
7
TMDS Data 0+
15
DDC_CLK
8
SHIELD
16
DDC_DAT
J5 / J6 : Audio OUT
J5
J6
R-Channel
L-Channel
(DB-15 Female)
5
1