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MicroUSB 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 o or is
in sleep state. The icon indicates that the USB port supports PowerShare feature.
NOTE: Certain USB devices may not charge when the computer is powered o or in sleep
state. In such cases, turn on the computer to charge the device.
NOTE: If you turn o your computer while charging a USB device, the device may stop
charging. To continue charging, disconnect the device and connect it again.
NOTE: On laptops, PowerShare feature stops charging the device when the laptop battery
charge reaches 10%. You can congure this limit using BIOS setup program.
USB-C Depending on your device, this port may support USB 3.1, Display over USB-C, and Thunderbolt 3 devices.
For more information, see the documentation that shipped with your device.
Thunderbolt 3 (USB-C)
port
You can connect USB 3.1 Gen 2, USB 3.1 Gen 1, DisplayPort, and Thunderbolt devices to this port. It
enables you to connect to external display using dongles. Provides data transfer rates up to 40 Gbps.
Debug port The debug port enables a user to run the USB 3.0 ports in USB 2.0 mode temporarily for troubleshooting
purposes and also when operating system is reinstalled using a USB optical drive or a ash drive.
eSATA
eSATA enables you to connect external storage devices, such as hard drives and optical drives, to your computer. It provides the same
bandwidth as internal SATA ports.
Your computer may have a standalone eSATA port or an eSATA/USB combo port.
Visual Graphics Array
Visual Graphics Array (VGA) enables you to connect to monitors, projectors, and so on.
You can connect to a HDMI or DVI port using the VGA to HDMI or VGA to DVI adapters respectively.
42
Ports and connectors
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