Dell Inspiron 15 (1564, Early 2010) - Manual (Page 316)

316
Ports
Parallel Port
A parallel port is a parallel communication physical interface through which
information transfers in or out 8 bits of data (1 byte) at a time. These 8 bits
are transmitted parallel to each other, as opposed to the same eight bits being
transmitted serially (all in a single row) through a serial port. A parallel port is
also known as a printer port or Centronics port and is commonly used to
connect to a printer.
Pin Signal Pin Signal
1 /STROBE 14 /AUTOFD
2 D0 15 /ERROR
3 D1 16 /INIT
4 D2 17 /SELIN
5 D3 18 GND
6 D4 19 GND
7 D5 20 GND
8 D6 21 GND
9 D7 22 GND
10 /ACK 23 GND
11 BUSY 24 GND
12 PE 25 GND
13 SEL