Seagate ST3660A Product Manual - Page 21

Medalist XE Family Product Manual, Rev. B 13 4-pin power connector 1234 Circuit board +5V +5V return +12V return +12V Front 2-pin header - + Pin 1 40-pin ATA interface connector 3-pin power connector (optional) Keyway 123 Circuit board Ground +12V +5V Drive activity LED (optional) 8-pin master/slave jumper block Spare jumper 7 5 31 Front across pin 1 and pin 3 86 42 The drive is a master; the slave is either a Medalist family drive or another ATA-compatible drive, or there is no slave. The drive is a master; a slave is present, but it is not ATA-compatible. The drive is a master; a slave is present that uses only the PDIAG- signal. The drive is a slave to an ATA-compatible master. Cable select Figure 3. Connectors and jumpers 2.4.1 Single-drive configuration Use the factory-default jumper setting when the Medalist drive is installed as the single drive in the computer. 2.4.2 Two-drive configuration When two drives are installed in the computer, you must configure one drive as the master and the other as the slave.