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Hardware Installation
SY-KT880 DRAGON 2
31
1. Onboard Serial Ports (COM)
External peripherals that use serial transmission scheme include:
- serial mouse
- modem
Plug the serial device cables directly into the COM1/COM2 9-pin male
connectors located at the rear panel of the motherboard.
2. Parallel Port PRT (LPT)
This parallel port is used to connect the printer or other parallel devices.
Plug the parallel device cable into the 25-pin female connector located at the
rear panel of the motherboard.
COM Pin Assignment
9
1
NDCD#
NDSR1#
NRTS1#
NCTS1
NRI1#
NRXD1
NTXD1
NDTR1#
GND
3
5
7
2
4
6
8
3
4
1
-STB
A
FD#
ERR#
INIT#
SLIN#
GND
GND
GND
GND
GND
GND
GND
GND
PRD0
PRD1
PRD2
PRD3
PRD4
PRD5
PRD6
PRD7
ACK#
BUSY
PE
SLCT
14
15
16
17
18
19
20
21
22
23
24
25
2
3
4
5
6
7
8
9
10
11
12
13