343S00481 Power Management IC for iPad Pro 12.9 5th Gen (2021)

The 2021 iPad Pro 12.9-inch was the first with the M1 chip and the mini-LED Liquid Retina XDR display. A fault in its 440-pin power management chip can leave this premium tablet completely dead, which is why a board-level repair is often worth the effort.

This listing sells the Apple 343S00481 power management IC for the iPad Pro 12.9-inch 5th gen (A2378, A2461, A2379). The listing gives its pin count as 440 and doesn't name a board position.

Signs it may have failed

• No boot with a good battery and a working USB-C port.

• Display or touch faults that stay with known-good screen parts.

• Abnormal current draw at power-on.

• A rail short traced to the chip.

Tips for this board

The board is thin and large, so support it well and preheat evenly. Check the battery line and connectors first, and confirm missing PMIC rails with good inputs before you remove a 440-pin part.

After fitting, check the rails and test boot, the XDR display, touch, Face ID and charging before reassembly. With all of those working, the tablet is ready to seal.