Seagate MEDALIST 1270 Installation Manual page 9

Medalist 1270 Installation Guide, July 1995
Options jumper block (J8)
9 7 5 3
13 11
10 8 6
14 12 4
Figure 2. Options jumper block settings
1
Circuit board
2
side up
Spares
One drive only
Drive is master;
slave is present
Drive is slave when
another drive is present;
Master/slave timing protocol.
Makes the drive compat-
ible with some drives as
the slave.
Dual-drive emulation
Cannot be used with
cable select.
Cannot be used with a
second, physical drive.
Cable select
Remote LED
connection
pin 13 (–), pin 14 (+)
7