Windows 10 Won't Detect Second Monitor

[ZetraTDK]

Hello there. I have Two Asus VS207T-P Monitors (Both DVI) and a Nvidia Geforce GTX 1060 6gb. I recently bought a DVI to 2x DVI splitter cable from StarTech. (ask me for link) When I plugged up both DVI cables into the splitter, the second monitor mirrored the first monitor. So I went into display settings and that's where Windows 10 won't detect my second monitor, and doesn't have the options to expand or for me to set up two different desktops. This may be stupid for asking, but did I get the wrong adapter cable? I just don't see how people with Nvidia 10 series cards with only one port get multiple displays. So do I need a new cable or what? Thanks for reading.

Here's my specs:

ARC 647 Gaming PC Case
Two Asus VS207T-P Monitors (both DMI)
Motherboard - Gigabyte GA‑78LMT‑USB3
CPU - AMD FX 6300 @ 3.7ghz
GPU - Nvidia GTX 1060 Founders Edition
Ram - Standard 8gb ram
Hard Drive - Standard 1 TB
PSU - EVGA 600 B1, 80+ BRONZE 600W
Windows 10

*Update*
So the splitter wasn't the right cable. The Nvidia GTX 1060 supports an HDMI cord and only one DMI, but my second monitor only supports DMI and HDMI. I'll have to get a VGA to HDMI cable.
Anyways, thanks for the answers everyone.

 

[USAFRet]

With a "splitter" the OS sees one monitor connected to one output on the GPU.
Hence, you can only see a mirrored display.

For 2 monitors, you need to plug them into two different ports on the GPU.
1 to the DVI, 1 to an HDMI.

 

[mwryder55]

I think the cable you bought is meant for presentations where you want the same display on multiple screens. You will need an adapter to convert one of your other outputs to DVI unless the monitor has the ability to use displayport or hdmi.

 

[Memhorder]

yeah the Splitter is just the same signal split in two. If you want to have the displays extended the you will need to use two different ports for each monitor.
The best way for you would be to use the Display Port to DVI adaptor

https://www.startech.com/ca/AV/Displayport-Converters/DisplayPort-to-DVI-Adapter-Cable~DP2DVI

or off the monitor DVI-D to HDMI

http://www.bestbuy.ca/en-CA/product/startech-startech-hdmi-to-dvi-d-video-cable-adapter-hdmidvifm-hdmidvifm/10156001.aspx

if you do that then you'll need the HDMI cable as well

 

[ZetraTDK]

With a "splitter" the OS sees one monitor connected to one output on the GPU.
Hence, you can only see a mirrored display.

For 2 monitors, you need to plug them into two different ports on the GPU.
1 to the DVI, 1 to an HDMI.

Oh ok, thanks!