Thunderbolt 4 Cable: Data transfer speed up to 40Gbps which is very suitable for users who need stable high bandwidth connection. NOTE: Data transfer speed still depend on what port you are using with it. Bandwidth up to 20Gbps for Gen2; Bandwidth up to 40Gbps for Gen 3. Single 8K or Dual 4K Video Display Support ultra HD video resolution, 40Gbps bandwidth allows single 8K@60Hz outputs or dual 4K@60Hz video, 40Gbps speed cables are suitable for eGPU and dual 4K UHD display scenarios. Daisy chain up to 6 Thunderbolt devices including docking stations, external graphics cards, and displays.