HP 24SII - Manual (Page 34)

If you are connecting your PC to the Model 24SII DES in serial and
are not going to use the BayTech software, you would not need to
modify your PATH command or include the RAMEXEC command in
the AUTOEXEC.BAT file.
If you are connecting your PC in parallel and intend to use the
BayTech software, you would not include either MODE command in
the AUTOEXEC.BAT file (unless you are using your com port for
another application outside the Model 24SII DES).
If you are connecting your PC in parallel and are not going to use the
BayTech software, there is no need to modify your AUTOEXEC.BAT
file. Just print normally after you cable the PC to the Model 24SII
DES and configure the Model 24SII DES (if required).
Parallel ports on the Model 24SII DES have DB-25 female
connectors. A straight, DB-25 male-to-male cable is required
between each IBM PC computer (or compatible) and the parallel ports
on the Model 24SII DES.
CAUTION: Some standard EIA-232 DB-25 cables may have Pin 1
grounded to connector shell. Since there is a strobe line on Pin 1 in
Centronics protocol, this ground must be removed if the cable is used
between an IBM PC and the Model 24SII DES in parallel.
A DB-25 male to Centronics cable is required between each printer
having a Centronics connector and the Model 24SII DES (same as
IBM PC to Centronics cable).
NOTE: BayTech will guarantee parallel data transmission for cable
lengths up to 15 feet. If you require a longer distance, it is suggested
that you either use parallel line drivers (such as Tran-x), extended
distance parallel cables, or consider a serial connection.