asus crosshair v formula z

I have an ASUS Crosshair V Formula Z motherboard and I was looking through the QVL Memory List and found an entry that makes no sense to me. Under the DDR3 2133 MHz Capability is an entry for G.SKILL F3-17000CL11Q2-64GBZLD 64GB (8X8GB) DS 11-11-11-30 1.5v. The problem is there are only 4...