dougweems1 :
I'm using an NVIDIA GeForce GTX 1050 Ti, it has one DVI port, one HDMI port, and one Displayport. My main monitor is using the DVI port, and my other monitors are using the HDMI splitter and are duplicating. Is there an HDMI to Displayport cord I can use?
It depends on the resolution.
For just 1920x1080 @ 60 hz. You can use a basic DisplayPort to HDMI cable.
https://www.amazon.com/AmazonBasics-DisplayPort-HDMI-Cable-Feet/dp/B015OW3M1W/
For 4K@60Hz you'll need a more expensive active adapter.
Adapter: https://www.amazon.com/Plugable-DisplayPort-Supports-displays-3840x2160/dp/B00S0C7QO8/
HDMI 2.0 Cable: https://www.amazon.com/IBRA-Orange-HDMI-Cable-18Gbps-28AWG/dp/B003VL5P2S/
Note: These adapters are for DisplayPort from GPU to HDMI on monitor. They are not reversible. Careful with cheap adapters which claim 4K. They often will be 4K@30Hz.