Seagate CD72LWH - Figure 13. Power Connector on the Internal Drives

Installation
23
The recommended 4-pin power connector for the internal drive is an AMP 1-48024-0
housing with AMP 60617-1 pins or their equivalent.
Power connector
pin 4
+5V
pin 3: GND
(+5V return)
pin 2: GND
(+12V return)
pin 1
12V
Figure 13. Power Connector on the internal Drives