This is NOT Thunderbolt 3. Don't buy it and expect the 40 Gbps that Thunderbolt 3 offers. The name is VERY misleading. Thunderbolt is not mentioned on the packaging. However, it mentions USB-C and 10 Gbps data transfer. This is a decent USB 3.1/3.2 Gen2 cable with a maximum speed of 10Gbps. UPDATE: After my review, the seller contacted me and changed the name to remove Thunderbolt. 3 from the description. They also reimbursed me for the inconvenience. Excellent customer service and I changed the rating to 5 because this is a really good USB 3.1/3.2 Gen2 10Gb/s cable.