Seagate ST31270A manual Attaching the cables, Attach a power-supply cable to the drive

Medalist 1270 Installation Guide, July 1995 9

Attaching the cables

Required materials:

∙A 40-conductor interface cable with a 40-pin, female interface connector for each drive you want to attach.

∙A four-conductor power-supply cable.

Note. To ensure the integrity of your data, use a nonshielded cable with a maximum length of 18 inches (46 centimeters).

This section refers to Figure 1 on page 6.

1.Attach the interface cable. Pin 1 on the drive must align with pin 1 of the hard-disc controller connector. Use the edge-stripe on the cable to denote pin 1. Pin 1 on the drive is located next to the four-pin power connector.

Caution. The cable and connector bond is delicate. Pulling the cable to remove the connector may damage the cable.

Attach an interface connector to the drive. If your interface con- nector has a key, it can only plug into the drive one way. Be sure that you do not bend the pins when you attach the cable.

Attach an interface-connector to the hard-disc controller connec- tor on the motherboard or host adapter. Be sure that pin 1 (see your system user’s guide or host adapter user’s guide to deter- mine the location of pin 1) is aligned with pin 1 on the drive.

Cable-select installation: If your computer uses cable-select, refer to its user’s guide to determine which interface connector is used for the master and which is used for the slave.

2. Attach a power-supply cable to the drive.

Caution. The cable and connector are designed to mate. Do not force a connection. Improper alignment can damage your drive.