Part Number: 618263-001, 619557-001, 619557-501, 619557-601.
Perfect compatibility: Compatible with HP Z420.
Package Contents: 1*Workstation Motherboard
Easy installation: Standard workstation motherboard size and specifications, allowing direct replacement of old or damaged motherboards, convenient, quick, and time-saving.
Good Customer Service: If you have any questions about the product, you can contact us directly, we will provide you with the best solution.