2.5” Bulldog User Guide
April 10, 2006
page 8 of 14
The Cable Select jumper allows the drive to be configured as a master or slave through the
IDE cable. A maximum of two drives may only be connected to one standard IDE cable.
Connecting the drive to the end of the cable configures the drive to be a master (DOS drive C:)
and connecting the drive to the middle connector of the cable configures the drive for a slave
(DOS drive D:).
With the Cable Select jumper off, the drive to uses the master/slave jumper for drive
configuration.
3.2.3 FACTORY DEFAULT
The factory default configuration is as the master drive with no jumpers installed.
3.3 IDE INTERFACE
The AT2515 uses a 44-pin 2mm connector mounted on the PCB to create both a power and
signal connection to the host. Maximum cable length is 18 inches. Recommended cable
length is 12 inches or less, especially if advanced PIO transfer modes are used.
3.3.1 IDE CONNECTOR ADAPTER
An adapter or interposer for converting the 2mm IDE connector to a standard 40-pin 0.100”
IDE connector is available from the factory. Order part number 153264-002. The adapter
converts the drive 44-pin 2mm connector to a standard 40-pin 0.100” connector. Power
arrives via a 4-pin Amp power header (EI series) identical to the connector used to supply
power to 3.5-inch floppy drives. To convert the 4-pin Amp power connector to a standard 4-
pin AT power connector, an ATA power cable adapter, part number 153273-002, is included.