Lenovo H430 Desktop - Manual (Page 62)

Hardware Maintenance Manual
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4. Reconnect the external cables and power cords to the computer. Refer
to “Locating connectors on the front of the computer” and “Locating
connectors on the rear of the computer”.
Note:
In most countries, Lenovo requires the return of the defective CRU.
Information about this will either come with the CRU or will arrive a
few days after the CRU has been delivered.