User manual

Impact-E 3x series embedded computer user manual
Page 15 of 40
KM1：
：：
：Keyboard/Mouse Connector Header (for Factory test only)
USBG1: USB Port#7 5-Pin Power Connector (5P Male)
PIN DESCRIPTION
1 USB_VCC
2 USBD0-
3 USBD0+
4 Ground
5 Case Ground
SC3T2: Select COM3 Type Jumper
COM3 TYPE SC3T1 SC3T2
RS-232 (Default) 1-2 1-5,2-6,3-7,4-8
RS-422 3-4 5-9,6-10,7-11,8-12
RS-485 5-6 5-9,6-10,7-11,8-12
Pin Description Pin Description
1 +5V 2 MSCLK
3 MSDATA 4 KEY
5 KBDAT 6 KEY
7 GND 8 KBCLK
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