source: Seagate ST3096A, ST3120A, ST3144A Installation Guide, Rev C

Jumper settings for Seagate ST3096A, ST3120A, ST3144A

model #capacitycylinders/heads/sectors per track
ST3096A85Mb IDE1024x10x17
ST3120A102Mb IDE1024x12x17
ST3144A124Mb IDE1001x15x17

User Configuration Jumper Block

front of drive -->
: | : : :drive is master
: : | : :slave present
: : : : |drive activity LED
: : : | :reserved
| : : : :reserved
setupdrive is masterslave present
only drive in system
ON
OFF
drive 1 in a chain
ON
ON
drive 2 in a chain
OFF
OFF

Pin 1 on the data cable connector is on the end closest to the power connector.
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