Intel Desktop Board DQ77KB Technical Product Specification
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Table 34. 40-Pin eDP Connector
Pin Signal Name Pin Signal Name
1 NC_Reserved 21 LCD_VCC (3.3 V/5 V/12 V)
2 High-speed_GND 22 LCD_Self_Test-or-NC
3 Lane3_N (DDPD_[3]N) 23 LCD_GND
4 Lane3_P (DDPD_[3]P) 24 LCD_GND
5 High-speed_GND 25 LCD_GND
6 Lane2_N (DDPD_[2]N) 26 LCD_GND
7 Lane2_P (DDPD_[2]P) 27 HPD (DDPD_HPD)
8 High-speed_GND 28 BKLT_GND
9 Lane1_N (DDPD_[1]N) 29 BKLT_GND
10 Lane1_P (DDPD_[1]P) 30 BKLT_GND
11 High-speed_GND 31 BKLT_GND
12 Lane0_N (DDPD_[0]N) 32 BKLT_ENABLE
13 Lane0_P (DDPD_[0]P) 33 BKLT_PWM_DIM
14 High-speed_GND 34 NC_Reserved
15 AUX_CH_P (DDPD_AUXP) 35 NC_Reserved
16 AUX_CH_N (DDPD_AUXN) 36 BKLT_PWR (12 V/19 V)
17 High-speed_GND 37 BKLT_PWR (12 V/19 V)
18 LCD_VCC (3.3 V/5 V/12 V) 38 BKLT_PWR (12 V/19 V)
19 LCD_VCC (3.3 V/5 V/12 V) 39 BKLT_PWR (12 V/19 V)
20 LCD_VCC (3.3 V/5 V/12 V) 40 NC_Reserved
Table 35. 8-Pin FPD Brightness Connector
Pin Signal Name Description
1 BKLT_EN Backlight enable
2 BKLT_PWM Backlight control
3 BKLT_PWR (12 V/19 V) Backlight inverter power
4 BKLT_PWR (12 V/19 V) Backlight inverter power
5 BKLT_GND/Brightness_GND Ground (shared)
6 BKLT_GND/Brightness_GND Ground (shared)
7 Brightness_Up Panel brightness increase
8 Brightness_Down Panel brightness decrease
Table 36. PANEL_OFF Header
Pin Signal Name
1 Ground
2 Monitor_off
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