I/O Connector; Options Jumper Block; Figure 2. Ata Interface Connector - Seagate Medalist 1640 Product Manual

18 Medalist 1640 and 2140 Product Manual, January 1996

2.2 I/O connector

The drive uses a 40-pin, male I/O connector with two rows of twenty pins
each. The even-numbered pins are closest to the printed circuit board's
edge. Pin 1 is near the 4-pin power connector. Pin 20 is removed for
keying purposes. A drawing of the I/O connector is shown in Figure 2.

Figure 2. ATA interface connector

We recommend the following part numbers or their equivalents for the
mating connector.
Part
Connector
Connector
Flat cable
To ensure the integrity of your data, use a 40-connector, nonshielded I/O
cable with a maximum length of 18 inches (0.46 meters).

2.3 Options jumper block

The options jumper block, shown in Figure 3, is used to configure the
drive for operation. It is a 12-pin dual header and uses 0.1-inch shunts.
The options jumper block allows you to:
• Configure the drive for single-drive operation.
• Configure the drive as master or slave.
• Extend the time period the Seagate drive as master waits for the slave
to respond for status acknowledgment during the boot cycle.
Description
40-pin
40-pin
AWG28 (stranded)
3M part number
3M-3417-7000
3M-3448-2040
3M-3365-40