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7
Chapter 2: External Connectors Pinout Description
VTC 1911 User Manual
RS485/USB/Audio Connector
Connector Number: 3
Pin
Definition
Pin
Definition
1
USB-
2
USB VCC
3
MCU_485_TX-
4
SPK_OUT_R
5
MIC_R_IN
6
USB+
7
GND
8
MCU
9
SPK_OUT_L
10
MIC_L_IN
11
DATA_L
12
DATA_H
13
DATA_GND
14
GND
15
Audio_GND
5
1
15
11
5
1
15
11
LED Indicators (Power/WWAN/WIFI/STORAGE)
Connector Number: 4
LED
LED Behavior
POWER
Power On: Green
WWAN
Blinking: Active
WIFI
Blinking: Active
STORAGE Light On: Storage Active
POWER
WWAN
WIFI
STORAGE