USB Technology

  1. USB Standards and Generations
    1. USB 1.x
      1. USB 1.0
        1. Low Speed (1.5 Mbit/s)
          1. Full Speed (12 Mbit/s)
            1. Initial Adoption
            2. USB 1.1
              1. Improved Reliability
                1. Widespread Industry Adoption
                  1. Bug Fixes and Clarifications
                2. USB 2.0
                  1. High Speed (480 Mbit/s)
                    1. Backward Compatibility with USB 1.x
                      1. Introduction of Mini and Micro Connectors
                        1. Enhanced Power Delivery
                          1. On-The-Go (OTG) Support
                          2. USB 3.x
                            1. USB 3.0 (SuperSpeed)
                              1. 5 Gbit/s Data Rate
                                1. Full Duplex Data Transfer
                                  1. Increased Power Delivery
                                    1. Blue Connector Color Coding
                                    2. USB 3.1
                                      1. SuperSpeed+ (10 Gbit/s)
                                        1. Enhanced Encoding Efficiency
                                          1. Improved Power Management
                                          2. USB 3.2
                                            1. Multi-Lane Operation
                                              1. Gen 1x1 (5 Gbit/s)
                                                1. Gen 1x2 (10 Gbit/s)
                                                  1. Gen 2x1 (10 Gbit/s)
                                                    1. Gen 2x2 (20 Gbit/s)
                                                    2. Backward Compatibility Features
                                                    3. USB4
                                                      1. Based on Thunderbolt 3 Protocol
                                                        1. Data Transfer Speeds
                                                          1. 20 Gbit/s
                                                            1. 40 Gbit/s
                                                            2. Dynamic Bandwidth Allocation
                                                              1. Protocol Tunneling
                                                                1. DisplayPort
                                                                  1. PCIe
                                                                  2. Backward Compatibility
                                                                    1. Type-C Connector Requirement

                                                                  Previous

                                                                  2. Core USB Architecture and Topology

                                                                  Go to top

                                                                  Next

                                                                  4. Physical Connectors and Cables