# USB 2 Type-B plug > the class of legacy USB 2 plugs (those which carry only USB 1–2 and power) at the peripheral device ends of cables, replaced by the USB 2 Type‑C plug **Wikidata**: [Q133871781](https://www.wikidata.org/wiki/Q133871781) **Source**: https://4ort.xyz/entity/usb-2-type-b-plug ## Summary The USB 2 Type-B plug is a legacy connector used on the peripheral end of USB cables, supporting only USB 1–2 data transfer and power. It has been largely replaced by the more versatile USB 2 Type-C plug. These plugs are identifiable by their square shape with beveled corners and are commonly found on older devices like printers and external hard drives. ## Key Facts - Belongs to the class of **USB 2 legacy plugs** that support only USB 1–2 protocols and power delivery. - Replaced by the **USB 2 Type-C plug**, which offers improved speed, reversibility, and versatility. - Subclass of **USB Type-B plug**, indicating use at the peripheral device end of cables. - Includes physical variants such as the **Standard-B**, **Micro-B**, and **Mini-B** plugs. - Different from **USB 3 Type-B** and **USB 2 Type-A** plugs due to differing pin configurations and performance capabilities. - Aliases include **USB 1.0 Type-B plug**, **USB 1.1 Type-B plug**, and **USB 2.0 Type-B plug**. - Image reference includes multiple legacy USB 2 Type-B plugs for scale and comparison. - Found primarily on older peripherals such as scanners, printers, and some external storage devices. ## FAQs ### Q: What devices typically use a USB 2 Type-B plug? A: USB 2 Type-B plugs were commonly used on older peripherals such as printers, scanners, and external hard drives. They connect to the host via a cable, with the Type-B end attaching to the peripheral. ### Q: Is USB 2 Type-B still supported in modern systems? A: While physically compatible with modern systems through adapters or legacy ports, USB 2 Type-B is considered obsolete. Most new devices now use USB Type-C for better performance and universal compatibility. ### Q: Can I replace a USB 2 Type-B connection with USB Type-C? A: Yes, but it requires either a direct replacement cable with USB Type-C or an adapter. However, upgrading may offer faster speeds and greater convenience due to the reversible design of USB Type-C. ## Why It Matters The USB 2 Type-B plug played a critical role in standardizing connections between computers and peripheral devices during the early era of USB technology. As one of the foundational plug types in the USB ecosystem, it enabled widespread adoption of plug-and-play hardware across desktop and office environments. Though superseded by newer standards, understanding its function remains relevant for maintaining or interfacing with legacy equipment. Its eventual replacement by USB Type-C reflects broader trends toward higher-speed data transfer, universal connectivity, and user-friendly reversible designs. ## Notable For - Being part of the **original set of standardized USB connectors**, predating USB 3 and USB4. - Having a **distinctive square-with-beveled-corners design**, making it visually distinguishable from other USB plugs. - Representing the **peripheral-side interface** in traditional USB A-to-B cabling setups. - Serving as the **last generation before full transition to USB Type-C** architecture. - Supporting maximum data rates up to **480 Mbps**, consistent with USB 2.0 specifications. ## Body ### Definition and Classification The **USB 2 Type-B plug** refers to the class of legacy USB plugs designed for connecting peripheral devices to hosts using USB 1–2 signaling and power delivery. Classified under the broader category of **USB 2 legacy plugs**, these connectors have since been succeeded by the more advanced **USB 2 Type-C plug**. These plugs fall within the **USB Type-B family**, which denotes connectors intended for use on the peripheral side of USB cables—distinguishing them from **Type-A plugs**, which are typically found on host devices like PCs. ### Physical Characteristics and Variants USB 2 Type-B plugs encompass several form factors including: - **Standard-B Plug**: The original square-shaped plug with beveled edges, widely used in desktop peripherals. - **Micro-B Plug**: A smaller variant introduced later, often seen in portable devices before Type-C became dominant. - **Mini-B Plug**: An even earlier compact version, now mostly phased out. All share the same functional limitation: they support only **USB 1.1 or USB 2.0 speeds** (up to 480 Mbps), along with basic power delivery. ### Role in Legacy Systems Prior to the introduction of USB 3 and USB4 technologies, USB 2 Type-B plugs formed the backbone of wired communication between personal computers and peripherals. Their prevalence ensured interoperability across brands and simplified device setup for consumers. Despite technological advancements, many existing installations continue to rely on these connectors, particularly in enterprise and industrial settings where equipment longevity outweighs the benefits of upgrading infrastructure. ### Obsolescence and Replacement With the rise of **USB Type-C**, which supports higher bandwidths, alternate modes (such as DisplayPort and Thunderbolt), and reversible insertion, the need for dedicated Type-B interfaces diminished significantly. As a result, manufacturers began phasing out USB 2 Type-B in favor of unified solutions centered around **USB 2 Type-C**, leading to reduced availability of native Type-B ports on newer devices. Adapters and converter cables remain available for backward compatibility purposes.