Seagate BARRACUDA 50 Installation Manual page 35

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Barracuda 50 Installation Guide, Rev. A
3.
Check the other available jumper settings (optional)
This drive provides several features for unique configura-
tions. You will not normally need to change from the default
settings for normal operation. See Figure 13 on page 34.
Single-ended mode option
You can force the drive to operate only in SE mode by
installing a jumper on J2 pins 15 and 16. The default is to
allow the drive to automatically detect and use SE or LVD
mode. See page 11 for a description of these two modes.
Delay Motor Start and Motor Start options
You can control when the drive's motor starts spinning the
media using these two jumper positions (J2 pins 11 and 12
and J2 pins 13 and 14). You can configure the drive to delay
spinning up until a certain number of seconds elapse or until
the drive receives a Start Unit command from the host sys-
tem. The default settings are with both off so that the drive
begins spining up as soon as it receives power.
Write Protect option
You can install a jumper connecting J2 pins 9 and 10 to pre-
vent anyone from writing data to this disc drive (users can
still read data from the drive). This jumper is normally left off
to allow users to write data to the drive.
Parity Check option
You can disable parity checking by installing a jumpers on
J2 pins 7 and 8. Most systems prefer that parity checking
remain enabled. Refer to your host adapter or system docu-
mentation to determine whether your host adapter supports
parity checking.
33

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