2 x DIMM, Max. 32GB, DDR4 
2 x DIMM, Max. 32GB, DDR4 2400/2133 MHz Un-buffered Memory
Dual Channel Memory Architecture
ECC Memory (ECC model) support varies by CPU.
* Hyper DIMM support is subject to the physical characteristics of individual CPUs. 
* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).

1 x PCIe 3.0/2.0 x16 (x16 or dual x8)
1 x PCIe 3.0/2.0 x16 (x8 mode)
2 x PCIe 2.0 x1

4 x SATA 6Gb/s port(s), gray,
Support Raid 0, 1, 10
1 x M.2 Socket 3, with M key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 x 4 mode)
1 x M.2 Socket 3, with M key, type 2242/2260/2280 storage devices support (SATA mode)

4 x USB 3.1 Gen 1 port(s) (4 at back panel, blue)
2 x USB 3.0 port(s) (2 at mid-board)
6 x USB 2.0 port(s) (2 at back panel, , 4 at mid-board)
1 x PS/2 keyboard (purple)
1 x PS/2 mouse (green)
1 x D-Sub
1 x HDMI
1 x LAN (RJ45) port(s)
4 x USB 3.1 Gen 1 (blue) ,
2 x USB 2.0
3 x Audio jack(s)