That information is readily available by reading the motherboard specification page.
System Memory
Capacity - 4 DIMM slots
Type - Quad Channel memory technology
- Support DDR4* 2133/1866/1600 ECC SO-DIMM
*2133 support one DIMM per channel.
DIMM Size Per DIMM - ECC SO-DIMM: 16GB, 8GB, 4GB
____________________________________________________________
Support OS:
OS Microsoft® Windows®
- Server 2008 R2 SP1 (64 bit)
- Server 2012 (64 bit)
- Server 2012 R2 (64 bit)
Linux
- RedHat Enterprise Linux Server 6.5/7.0 (32 / 64 bit)
- CentOS 5.10 / 6.5 (32 / 64 bit)
- SUSE Enterprise Linux Server 11 SP3 (32 / 64 bit)
- FreeBSD 9.2 (32 / 64 bit)
- Fedora core 19 (64 bit)
- Ubuntu 12.04.2 (64 bit) / 12.10 (64 bit)
Virtual
- VMWare® ESXi 5.5