Maxtor 1925 - Manual (Page 39)

Installation
4-14 Quickview 40 20/30/40GB AT
4.7.1.1 Connecting the Adapter Board and the Drive
Use a 40-pin ribbon cable to connect the drive to the board. See Figure
4-8. To connect the drive to the board:
1. Insert the 40-pin cable connector into the mating connector of the adapter
board. Make sure that pin 1 of the connector matches with pin 1 on the
cable.
2. Insert the other end of the cable into the header on the drive.
When inserting this end of the cable, make sure that pin 1 of the
cable connects to pin 1 of the drive connector.
3. Secure the drive to the system chassis by using the mounting
screws, as shown in Figure 4-9.
Figure 4-9 Drive Power Supply and ATA Bus Interface Cables
Key Slot
Pin 1
Bevel
ATA-Bus
Interface
Connector
40-Pin Header
DC Power
Connector
ATA-Bus
Interface Cable
Power Supply Cable
(3-Pin or 4-Pin)