# USB 2 receptacle > the USB receptacles, both Type‑C and legacy (pre–Type‑C), carrying only USB 1–2 and power, as opposed to the Full‑Featured Type‑C, with exhaustive capabilities, and the legacy USB 3 receptacles, supporting a subset of USB 1–3 and power **Wikidata**: [Q134472149](https://www.wikidata.org/wiki/Q134472149) **Source**: https://4ort.xyz/entity/usb-2-receptacle ## Summary A **USB 2 receptacle** is a type of USB port that supports data transfer speeds up to USB 2.0 (480 Mbps) and power delivery, including both legacy (pre-Type-C) and modern Type-C variants. Unlike Full-Featured Type-C or USB 3 receptacles, USB 2 receptacles lack advanced features like USB 3.0 speeds, DisplayPort Alt Mode, or Thunderbolt compatibility. ## Key Facts - **Subclass of**: USB 2 connector and USB receptacle. - **Aliases**: USB 2.0 receptacle, USB 1.1 receptacle, USB 1.0 receptacle, USB 1 receptacle. - **Official name**: USB 2.0 receptacle (as per USB.org specifications). - **Different from**: Full-Featured Type-C receptacle, USB Type-C Power-Only receptacle, and USB 3 receptacle. - **Legacy variants**: Includes Standard-A, Standard-B, Micro-AB, Micro-B, Mini-A, Mini-AB, and Mini-B receptacles. - **Replaced by**: USB 2 Type-C receptacle, which consolidates all legacy USB 2 ports. - **Compliance documents**: Specifications available from USB.org, including USB 2.0 and USB 3.1 legacy connector revisions. - **Image examples**: Illustrations of USB 2 Type-C and legacy receptacles available on Wikimedia Commons. ## FAQs ### Q: What is the difference between USB 2 and USB 3 receptacles? A: USB 2 receptacles support data transfer speeds up to 480 Mbps and lack USB 3.0 capabilities, while USB 3 receptacles support speeds up to 5 Gbps and additional features like DisplayPort Alt Mode. ### Q: Are USB 2 Type-C and legacy USB 2 receptacles interchangeable? A: No, USB 2 Type-C receptacles are designed to replace all legacy USB 2 ports, including Standard-A, Micro-B, and Mini-AB, due to their reversible design and backward compatibility. ### Q: What are the common legacy USB 2 receptacle types? A: Legacy USB 2 receptacles include Standard-A, Standard-B, Micro-AB, Micro-B, Mini-A, Mini-AB, and Mini-B, which are now being phased out in favor of USB 2 Type-C. ### Q: Can a USB 2 receptacle support power delivery? A: Yes, USB 2 receptacles can provide power delivery, but they do not support higher-speed data transfer or advanced features like those in Full-Featured Type-C or USB 3 ports. ### Q: Where can I find official specifications for USB 2 receptacles? A: Official specifications are available on the USB.org website, including the USB 2.0 Specification and USB 3.1 Legacy Cable and Connector documents. ## Why It Matters The USB 2 receptacle was a foundational component in the evolution of USB technology, enabling data transfer and power delivery for a wide range of devices. While it has been largely replaced by USB 2 Type-C and USB 3.0/3.1 ports, legacy USB 2 receptacles remain in use in many older devices. The transition to USB 2 Type-C was driven by the need for a reversible, high-performance connector that could replace multiple legacy ports. USB 2 receptacles played a crucial role in the widespread adoption of USB technology, facilitating connectivity for peripherals, storage devices, and charging solutions. Their standardization under USB.org ensured compatibility across different manufacturers, contributing to the seamless integration of USB devices into computing and mobile ecosystems. ## Notable For - **Replaced multiple legacy ports**: USB 2 Type-C consolidates Standard-A, Micro-B, and Mini-AB receptacles into a single, reversible design. - **Backward compatibility**: Supports USB 1.1 and USB 2.0 speeds while maintaining power delivery functionality. - **Widely adopted**: Used in devices ranging from computers to smartphones and accessories. - **Phased out by USB 3.0/3.1**: USB 2 receptacles are being replaced by faster, more versatile USB 3.0/3.1 and Full-Featured Type-C ports. - **Standardized by USB.org**: Official specifications ensure interoperability across manufacturers. ## Body ### Overview USB 2 receptacles are part of the broader USB connector family, designed to support data transfer speeds up to 480 Mbps (USB 2.0) and power delivery. They include both legacy (pre-Type-C) and modern Type-C variants, with the latter replacing all previous USB 2 ports due to its reversible design and backward compatibility. ### Types and Variants USB 2 receptacles encompass several legacy types: - **Standard-A**: Common on desktop computers. - **Standard-B**: Used for high-power devices like external hard drives. - **Micro-AB**: Found in smartphones and tablets. - **Micro-B**: Used in older Android devices. - **Mini-A**: Found in some mobile devices. - **Mini-AB**: Used in early iPods and other portable devices. - **Mini-B**: Found in some older mobile accessories. ### Technical Specifications - **Data transfer speed**: Up to 480 Mbps (USB 2.0). - **Power delivery**: Supports power delivery but lacks advanced features of USB 3.0/3.1 and Full-Featured Type-C. - **Official name**: USB 2.0 receptacle, as per USB.org specifications. ### Evolution and Replacement USB 2 Type-C receptacles were introduced to replace all legacy USB 2 ports, offering a reversible, high-performance alternative. The transition was driven by the need for a single, versatile connector that could support multiple functions, including data transfer, power delivery, and video output. ### Compliance and Standards Official specifications for USB 2 receptacles are available from USB.org, including the USB 2.0 Specification and USB 3.1 Legacy Cable and Connector documents. These standards ensure compatibility and interoperability across different manufacturers. ### Image Resources Illustrations of USB 2 Type-C and legacy receptacles are available on Wikimedia Commons, providing visual references for different types of USB 2 ports. ## References 1. [Source](https://www.usb.org/document-library/usb-31-legacy-cable-and-connector-revision-10) 2. [Source](https://www.usb.org/document-library/universal-serial-bus-31-legacy-connectors-and-cable-assemblies-compliance-document) 3. [Source](https://www.usb.org/document-library/usb-32-revision-11-june-2022) 4. [Source](https://www.usb.org/document-library/usb-type-cr-connectors-and-cable-assemblies-compliance-document-rev-21b) 5. [Source](https://www.usb.org/document-library/usb-type-cr-cable-and-connector-specification-release-24)