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  Drives Service & Support > Legacy > 1333 > FAQ's
  1. Since this drive has become obsolete, which drive was made to replace it, and what are the differences?
  2. Which board is the Main Circuit Assembly kit and the Control Circuit Assembly kit?

1.
Q? Since this drive has become obsolete, which drive was made to replace it, and what are the differences?
A! The PowerFlex 4 class drives make a great replacement for the 1333. The PowerFlex 4 class drives have a smaller footprint, and have much more functionality.

2.
Q? Which board is the Main Circuit Assembly kit and the Control Circuit Assembly kit?
A! The Main Circuit Assembly kit is the bottom board in the drive, and the Control Circuit Assembly is the top board in the drive. The Control Circuit Assembly will contain the display of the drive. The Control Circuit Assembly is a longer rectangular board streched across the middle of the drive.