Amazon.com: fairikabe HDMI to DisplayPort Adapter 4K 60Hz, HDMI 2.0 to Displayport 1.2 Cable Male to Female, Unidirectional HDMI to Display Port Adapter Compatible with Mac Mini, Raspberry Pi, Xbox, PS4… : Electronics
Monoprice Mini DisplayPort 1.2a / Thunderbolt to 4K HDMI, DVI, and VGA Passive Adapter, Black - Monoprice.com
HDMI - Wikipedia
DisplayPort 1.2 to HDMI Active Adapter Cable 4K 60Hz, 12-ft. | Eaton
Amazon.com: CableCreation 4K Active DisplayPort to HDMI Cable 6FT, DP to HDMI Cable DP 1.2 4K x 2K & 3D Audio/Video Monitor Cable,Support Eyefinity Multi-Screen,1.8M / Black : Electronics
Amazon.com: Tripp Lite DisplayPort 1.2a to HDMI Adapter Cable, Active with Gripping HDMI Plug M/M DP 4K, 3' (P582-003-HD-V2A) : Everything Else