ELSKY EM218, User Manual, Page: 10 / 33

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2.4.1 EDP1 screen operating voltage:
Position symbol: EDP1_PWR (1*3Pin,2.54mm) pin position symbol drawing
pin definition
1-2 short circuit +3.3V
2-3 short circuit +5V
Notice:Screens of different sizes require different operating voltages. The motherboard provides two screen
operating voltages of 3.3V, 5V. Please set the corresponding value of "EDP1_PWR"according to the working voltage
required by the screen, otherwise there will be danger of burning the screen and burning the motherboard!
2.5 LPT pin definition:
Position symbol: JLPT1 (2*13Pin,2.0mm) pin position symbol drawing
pin definition pin definition
1 STB 2 AFD
3 PD0 4 ERR
5 PD1 6 INIT
7 PD2 8 SLIN
9 PD3 10 GND
11 PD4 12 GND
13 PD5 14 GND
15 PD6 16 GND
17 PD7 18 GND
19 ACK 20 GND
21 BUSY 22 GND
23 PE 24 GND
25 SLCT 26 NC
2.6 Serial port(COM) function and pin definition:

The motherboard supports standard RS232 signal,does not support RS422/RS485.

The 9th pin of the COM1/COM2 /COM3/COM4 can change the jumper setting to 5V or +12V voltage by
JPCOM1/JPCOM2/JPCOM3/JPCOM4.
Position symbol: JPCOM1 JPCOM2 JPCOM3 JPCOM4 (2*3Pin,2.0mm) pin position symbol drawing
pin The 9th pin of COM1/COM2/COM3/COM4 is charged
1-2 short circuit +5V
3-4 short circuit +12V
5-6 short circuit Without electricity(Default)