Product Description [Learn While Buying] Confused by the name of USB 3.2 3.1 3.0 Gen 1 Gen 2? Here's the right answer: USB 3.2 Gen 1=USB 3.1 Gen 1=USB 3.0 (5Gbps) USB 3.2 Gen 2=USB 3.1 Gen 2 (10Gbps) USB 3.2 Gen 2*2=USB 3.1 Gen 2*2 (20Gbps) -Functions：Extend Type-C cable, joins 2 USB C male cables, support charging & data transmission, compaitble with TB3 ports. -Parameters：The maximum voltage is 20v, the maximum current is 5A, the maximum power can reach 100W, and the maximum transmission rate is 10Gbps. (10Gbps is the theoretical maximum transmission speed. According to the bucket theory, the actual speed depends on the device with the lowest speed). -4K Resolution：The USB Type c expansion coupler can transmit video and audio signals, and expand to a variety of audio and video output interfaces: HDMI, DVI, and VGA interfaces, which can achieve 4K resolution expansion. -Compatibility： Widely work with most Type C devices. For MacBook Pro; Surface Book 2; Samsung Galaxy S21 S20,S10, Note20 10; LG G7 V20; Google Pixel, ChromeBook, etc.