Dell Inspiron 3471 Me and My For Inspiron XPS and Alienware computers - Page 36

USB, USB ports, USB standards

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RCA S/PDIF port-Transmits digital audio without the need of analog audio conversion. Optical S/PDIF port-Transmits digital audio, using optical signals, without the need of analog audio conversion. USB Universal Serial Bus (USB) enables you to connect peripherals to a computer or a tablet. These peripherals include the mouse, keyboard, printer, external drives, cameras, phones, and so on. USB port may be used to transfer data between your computer and the device and also to charge supported devices. For more information, see the documentation for your device. Some computers also have USB ports with integrated PowerShare feature that enables you to charge your USB devices even when the computer in turned off. USB also supports Plug-and-Play and hot swapping. • Plug‑and‑Play-Enables your computer to recognize and configure a device automatically. • Hot swapping-Enables you to remove and connect USB devices without restarting your computer. USB ports Table 7. Types of USB ports Standard USB Mini‑USB Micro‑USB Powered USB The standard USB port is present on most laptops and desktops. Most USB devices connect to the computer using this port. A mini‑USB port is used in small electronic devices such as cameras, external storage drives, tablets, and so on. A micro-USB port is smaller than mini-USB port and is used in phones, tablets, wireless headphones, and other small electronic devices. A powered USB port uses a more complex connector than a standard USB. It essentially has two connectors in a single cable, one for standard USB plug and the other for power, thus allowing higherpower devices to be connected without the use of an independent power supply. It is used in retail equipment such as barcode reader and receipt printers. USB standards Table 8. USB standards USB 3.1 Gen 2 USB 3.1 Gen 1 USB 2.0 USB 1.x USB PowerShare This is also referred to as SuperSpeed USB+. This port supports peripherals such as storage devices, printers, and so on. Provides data transfer speeds up to 10 Gbps. It can be found with USB Type-C connections and has capabilities of Gen 1 in addition to DisplayPort over USB video capability. This is also referred to as SuperSpeed USB. This port supports peripherals such as storage devices, printers, and so on. Provides data transfer speeds up to 5 Gbps. Systems with Legacy USB 3.0 ports are now USB 3.1 Gen 1. This is referred to as Hi-Speed USB. It provides additional bandwidth for multimedia and storage applications. USB 2.0 supports data transmission speed up to 480 Mbps. Legacy USB standard supporting data transfer speeds up to 11 Mbps. The USB PowerShare feature enables you to charge USB devices when the computer is powered off or is in sleep state. The icon indicates that the USB port supports PowerShare feature. 36 Ports and connectors

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RCA S/PDIF port
—Transmits digital audio without the need of
analog audio conversion.
Optical S/PDIF port
—Transmits digital audio, using optical
signals, without the need of analog audio conversion.
USB
Universal Serial Bus (USB) enables you to connect peripherals to a computer or a tablet. These peripherals include the mouse, keyboard,
printer, external drives, cameras, phones, and so on.
USB port may be used to transfer data between your computer and the device and also to charge supported devices. For more
information, see the documentation for your device.
Some computers also have USB ports with integrated PowerShare feature that enables you to charge your USB devices even when the
computer in turned off.
USB also supports Plug-and-Play and hot swapping.
•
Plug
‑
and
‑
Play
—Enables your computer to recognize and configure a device automatically.
•
Hot swapping
—Enables you to remove and connect USB devices without restarting your computer.
USB ports
Table 7. Types of USB ports
Standard USB
The standard USB port is present on most laptops and desktops. Most USB devices connect to the
computer using this port.
Mini
‑
USB
A mini
‑
USB port is used in small electronic devices such as cameras, external storage drives, tablets, and
so on.
Micro
‑
USB
A micro-USB port is smaller than mini-USB port and is used in phones, tablets, wireless headphones, and
other small electronic devices.
Powered USB
A powered USB port uses a more complex connector than a standard USB. It essentially has two
connectors in a single cable, one for standard USB plug and the other for power, thus allowing higher-
power devices to be connected without the use of an independent power supply. It is used in retail
equipment such as barcode reader and receipt printers.
USB standards
Table 8. USB standards
USB 3.1 Gen 2
This is also referred to as SuperSpeed USB+. This port supports peripherals such as storage devices,
printers, and so on. Provides data transfer speeds up to 10 Gbps. It can be found with USB Type-C
connections and has capabilities of Gen 1 in addition to DisplayPort over USB video capability.
USB 3.1 Gen 1
This is also referred to as SuperSpeed USB. This port supports peripherals such as storage devices,
printers, and so on. Provides data transfer speeds up to 5 Gbps. Systems with Legacy USB 3.0 ports are
now USB 3.1 Gen 1.
USB 2.0
This is referred to as Hi-Speed USB. It provides additional bandwidth for multimedia and storage
applications. USB 2.0 supports data transmission speed up to 480 Mbps.
USB 1.x
Legacy USB standard supporting data transfer speeds up to 11 Mbps.
USB PowerShare
The USB PowerShare feature enables you to charge USB devices when the computer is powered off or
is in sleep state. The
icon indicates that the USB port supports PowerShare feature.
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Ports and connectors