![VIA Technologies P4MA PRO User Manual Download Page 22](http://html1.mh-extra.com/html/via-technologies/p4ma-pro/p4ma-pro_user-manual_1011187022.webp)
Installation
2-9
USB Port Connectors
The VIA P4MA PRO mainboard provides 2 USB 2.0 ports (plus 1 pin-headers
for up to 2 additional USB 2.0 connections; see 2-17). USB-compatible devices
can be plugged directly into these ports.
Pin Definition
USB Ports
1 2 3 4
5 6 7 8
Parallel Port Connector: LPT1
The mainboard provides a 25-pin female connector for LPT (parallel port). A
parallel port is a standard printer port that supports Enhanced Parallel Port
(EPP) and Extended Capabilities Parallel Port (ECP) modes.
13
1
14
25
PIN
SIGNAL DESCRIPTION
1
STROBE
Strobe
2
DATA0
Data0
3
DATA1
Data1
4
DATA2
Data2
5
DATA3
Data3
6
DATA4
Data4
7
DATA5
Data5
8
DATA6
Data6
9
DATA7
Data7
10
ACK#
Acknowledge
11
BUSY
Busy
12
PE
Paper End
13
SELECT
Select
14
AUTO FEED#
Automatic Feed
15
ERR#
Error
16
INIT#
Initialize Printer
17
SLIN#
Select In
18
GND
Ground
19
GND
Ground
20
GND
Ground
21
GND
Ground
22
GND
Ground
23
GND
Ground
24
GND
Ground
25
GND
Ground
Pin Definition
PIN
SIGNAL
DESCRIPTION
1
VCC
+5V
2
-Data 0
Negative Data Channel 0
3
+Data 0
Positive Data Channel 0
4
GND
Ground
5.
VCC
+5V
6.
-Data 1
Negative Data Channel 1
7.
+Data 1
Positive Data Channel 1
8.
GND
Ground