Cable Matters 4K DisplayPort to DisplayPort Cable 2m (DP to DP Cable) with 4K (3840 x 2160@60Hz), 2K (2560 x 1440@144Hz) support - 2 Metres: Amazon.co.uk: Computers & Accessories
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DISPLPORT10L - StarTech.com 10 ft DisplayPort 1.2 Cable with Latches - 4K x 2K (4096 x 2160) @ 60Hz - DPCP & HDCP - Male to Male DP Video Monitor Cable (DISPLPORT10L) - DisplayPort cable - 3 m - Currys Business