Several manufacturers offer external portable USB hard disk drives, or empty enclosures for disk drives. These offer performance comparable to internal drives, limited by the number and types of attached USB devices, and by the upper limit of the USB interface. Other competing standards for external drive connectivity include eSATA, ExpressCard, FireWire (IEEE 1394), and most recently Thunderbolt. USB-C (officially USB Type-C) is a standard that defines a new connector, and several new connection features. Among them it supports Alternate Mode, which allows transporting other protocols via the USB-C connector and cable. This is commonly used to support the DisplayPort or HDMI protocols, which allows connecting a display, such as a computer monitor or television set, via USB-C. The initial versions of the USB standard specified connectors that were easy to use and that would have acceptable life spans; revisions of the standard added smaller connectors useful for compact portable devices. Higher-speed development of the USB standard gave rise to another family of connectors to permit additional data paths. All versions of USB specify cable properties; version 3. x cables include additional data paths. The USB standard included power supply to peripheral devices; modern versions of the standard extend the power delivery limits for battery charging and devices requiring up to 240 watts. USB has been selected as the standard charging format for many mobile phones, reducing the proliferation of proprietary chargers. The OTG device with the A-plug inserted is called the A-device and is responsible for powering the USB interface when required, and by default assumes the role of host. The OTG device with the B-plug inserted is called the B-device and by default assumes the role of peripheral. An OTG device with no plug inserted defaults to acting as a B-device. If an application on the B-device requires the role of host, then the Host Negotiation Protocol (HNP) is used to temporarily transfer the host role to the B-device. PS/2 to USB Keyboard and Mouse Adapter". StarTech.com. Archived from the original on 12 November 2014 . Retrieved 21 May 2023.

300mm Type A Plug to Type B Plug USB / Lightning Cables

Thunderbolt 3 uses USB-C cables; the USB4 specification allows hosts and devices and requires hubs to support interoperability with the standard using the Thunderbolt 3 Alternate Mode.

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The charging device identifies a charging port by non-data signaling on the D+ and D− terminals. A dedicated charging port places a resistance not exceeding 200Ω across the D+ and D− terminals. [50] :§ 1.4.7; table 5-3 Universal Serial Bus Power Delivery Specification Revision 3.0 Version 2.0a (Released)" (ZIP). USB Implementers Forum . Retrieved 27 April 2023.

USB hardware - Wikipedia USB hardware - Wikipedia

What’s the difference between a USB Type-A and USB type-B? Aside from their pin configurations, they also have different shapes and sizes. These shapes are designed to comply with different peripherals with different sizes. Take a smart phone for example – most of the phones used these days are capable of re-charging through the use of cable connectors, but to be effective, a small Male-connector should be used to fit the standard thinness of a phone. USB PD continues the use of the bilateral 5% tolerance, with allowable voltages of PDO ±5% ±0.5V (eg. for a PDO of 9.0V, the maximum and minimum limits are 9.95V and 8.05V, respectively). [42] Ever thought of the different shapes and sizes of USB ports and connectors? These are actually the types of USB in which each have their own purpose for effective use and of course, easier user-recognition. Definitions USB Type-A

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The USB3.2 specification added a second lane to the Enhanced SuperSpeed System besides other enhancements, so that SuperSpeedPlus USB system part implements the Gen 1×2, Gen 2×1 and Gen 2× operation modes. The SuperSpeed USB part of the system however still implements the one-lane Gen 1×1 operation mode. Therefore, two-lane operations, namely USB3.2 Gen1× 2(10 Gbit/s) and Gen2× 2(20 Gbit/s), are only possible with Full-Featured USB-C Fabrics. [7] As of 2023, [update] they are somewhat rarely implemented; Intel, however, includes them in its 11th generation SoC processor models. On the other hand, USB3.2 Gen1(x1) (5 Gbit/s) and Gen2(x1) (10 Gbit/s) has been quite common for some years. Because use of the USB logo is only permitted after compliance testing, the user can have confidence that a USB device will work as expected without extensive interaction with settings and configuration. The USB standard also provides multiple benefits for hardware manufacturers and software developers, specifically in the relative ease of implementation: a b c "Universal Serial Bus 3.1 Specification" (ZIP). USB Implementers Forum . Retrieved 27 April 2023. The wide range of transfer speeds available from a USB interface suits devices ranging from keyboards and mice up to streaming video interfaces.