17 R5, adding Samsung 970 EVO 2TB NVMe PCIe M.2 2280 SSD

I have an Alienware 17 R5 with GTX 1070 running Windows 10 Pro.

I was looking into purchasing a new Samsung 970 EVO 2TB NVMe card but came across document below for the 17 R5 showing the Storage specs.   On page 20 is says capacity is 1TB for the two 2280 NVMe slots.

http://topics-cdn.dell.com/pdf/alienware-17-r5_users-guide_en-us.pdf

Can anyone confirm if the 2TB card will work and if the full capacity will be available.  Not having any luck finding anything specific on this topic.  Thanks for any help

             Storage Type                            Interface type                         Capacity
• One M.2 2242 solid-state drive       SATA AHCI 6 Gbp
• One M.2 2280 solid-state drive       PCIe NVMe up to 32 Gbps      Up to 1 TB
• One M.2 2280 solid-state drive       PCIe NVMe up to 32 Gbps      Up to 1 TB