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  2. USB communications - Wikipedia

    en.wikipedia.org/wiki/USB_communications

    No device detected. Both lines are pulled down by 15 kΩ pull-down resistors on the host side. SE0 ≥ 2 μs Connect USB device pulls up either D+ or D− to wake the host from the detached line state. This starts the USB enumeration process. This sets the idle state. D− pull-up D+ pull-up As full speed, then chirp in reset: Idle / J

  3. Software protection dongle - Wikipedia

    en.wikipedia.org/wiki/Software_protection_dongle

    Some software developers use traditional USB flash drives as software license dongles that contain hardware serial numbers in conjunction with the stored device ID strings, which are generally not easily changed by an end-user. A developer can also use the dongle to store user settings or even a complete "portable" version of the application.

  4. Open Pluggable Specification - Wikipedia

    en.wikipedia.org/wiki/Open_Pluggable_Specification

    Open Pluggable Specification (OPS) is a computing module plug-in format available for adding computing capability to flat panel displays. The format was first announced by NEC , Intel , and Microsoft in 2010.

  5. USB hardware - Wikipedia

    en.wikipedia.org/wiki/USB_hardware

    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.

  6. Device Manager - Wikipedia

    en.wikipedia.org/wiki/Device_Manager

    Windows successfully loaded the device driver for this hardware but cannot find the hardware device. 42: Windows cannot run the driver for this device because there is a duplicate device already running in the system. 43: Windows has stopped this device because it has reported problems. 44: An application or service has shut down this hardware ...

  7. Extensible Host Controller Interface - Wikipedia

    en.wikipedia.org/wiki/Extensible_Host_Controller...

    The xHCI reduces the need for periodic device polling by allowing a USB 3.0 or later device to notify the host controller when it has data available to read, and moves the management of polling USB 2.0 and 1.1 devices that use interrupt transactions from the CPU-driven USB driver to the USB host controller.

  8. USB mass storage device class - Wikipedia

    en.wikipedia.org/wiki/USB_mass_storage_device_class

    The Linux kernel has supported USB mass-storage devices since version 2.3.47 [3] (2001, backported to kernel 2.2.18 [4]).This support includes quirks and silicon/firmware bug workarounds as well as additional functionality for devices and controllers (vendor-enabled functions such as ATA command pass-through for ATA-USB bridges, used for S.M.A.R.T. or temperature monitoring, controlling the ...

  9. Failure detector - Wikipedia

    en.wikipedia.org/wiki/Failure_detector

    In a distributed computing system, a failure detector is a computer application or a subsystem that is responsible for the detection of node failures or crashes. [1] Failure detectors were first introduced in 1996 by Chandra and Toueg in their book Unreliable Failure Detectors for Reliable Distributed Systems.