Socket 2011 3 motherboard series asrock x99 form factor e atx supports multi core processors 8 core compatible cpus intel core i7 intel xeon processor codename haswell e chipset intel x99 memory slot 8 ram operation mode quad channel ram type ddr4 memory clock speed 2 133 mhz specification pc4 17000 maximum memory expansion 128 gb pcie 30 pcie 20 support number of pci x x 16 slots 5 network port 2 x rj45 lan ports back panel io ports 1 x ps