AT3550 User Guide V1.00
February 11, 2005
page 8 of 16
all writes from occurring. This jumper must be prior to the drive powering up to be
recognized.
3.2.5 OPTION HEADER J2
The Option Header is located on the LED-side of the drive, as illustrated below:
J2 Option Jumpers,
2x6, 2mm
WP
OPT1
OPT2
TX
LED
RX
XP
GND
Jumper Header – J2
3.2.6 WRITE PROTECT
The WP jumper on header J2 is used to write-protect the drive. The default
position of this jumper is OFF. Installing the WP jumper inhibits all further writes
to the drive, while read accesses occur as normal.
WP: Write Protect
configured for normal
operation -- jumper off
3.2.7 OPTION JUMPERS
The OPT1 and OPT2 jumpers are used for factory test functions or special
functions only, and should always be left open.
