Asus Maximus IV Extreme-Z - Manual (Page 36)

2.2.3 Central Processing Unit (CPU)
The motherboard comes with a surface mount LGA1155 socket designed for the
Intel ® 2nd Generation Core™ i7 / Core™ i5 / Core™ i3 Processors.
• The LGA1156 CPU is incompatible with the LGA1155 socket. DO NOT
install a LGA1156 CPU on the LGA1155 socket.
• Upon purchase of the motherboard, ensure that the PnP cap is on
the socket and the socket contacts are not bent. Contact your retailer
immediately if the PnP cap is missing, or if you see any damage to the PnP
cap/socket contacts/motherboard components. ASUS will shoulder the cost
of repair only if the damage is shipment/transit-related.
• Keep the cap after installing the motherboard. ASUS will process Return
Merchandise Authorization (RMA) requests only if the motherboard comes
with the cap on the LGA1155 socket.
• The product warranty does not cover damage to the socket contacts
resulting from incorrect CPU installation/removal, or misplacement/loss/
incorrect removal of the PnP cap.
Ensure that all power cables are unplugged before installing the CPU.
2-4 Chapter 2: Hardware information