| 1 | <?xml version='1.0' encoding='UTF-8'?>
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| 2 | <!DOCTYPE topic PUBLIC "-//OASIS//DTD DITA Topic//EN" "topic.dtd">
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| 3 | <topic xml:lang="en-us" id="emul-hardware">
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| 4 | <title>Emulated Hardware</title>
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| 5 |
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| 6 | <body>
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| 7 | <p><ph conkeyref="vbox-conkeyref-phrases/product-name"/> virtualizes nearly all of the host's
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| 8 | hardware. Depending on a VM's configuration, the guest will see the following virtual
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| 9 | hardware: </p>
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| 10 | <ul>
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| 11 | <li>
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| 12 | <p><b outputclass="bold">Input devices.</b> <ph conkeyref="vbox-conkeyref-phrases/product-name"/>
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| 13 | can emulate a standard PS/2 keyboard and mouse. These devices
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| 14 | are supported by most guest OSes.
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| 15 | </p>
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| 16 | <p>
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| 17 | In addition, <ph conkeyref="vbox-conkeyref-phrases/product-name"/> can provide virtual USB input
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| 18 | devices to avoid having to capture mouse and keyboard, as
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| 19 | described in <xref href="keyb_mouse_normal.dita#keyb_mouse_normal"/>.
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| 20 | </p>
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| 21 | </li>
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| 22 | <li>
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| 23 | <p><b outputclass="bold">Graphics.</b> The default
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| 24 | <ph conkeyref="vbox-conkeyref-phrases/product-name"/> graphics device for Windows guests is an SVGA
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| 25 | device. For Linux guests, the default graphics device emulates
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| 26 | a VMware SVGA graphics device. See
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| 27 | <xref href="settings-screen.dita#settings-screen"/>.
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| 28 | </p>
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| 29 | <p>
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| 30 | For legacy guest OSes, a VGA-compatible graphics device is
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| 31 | available.
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| 32 | </p>
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| 33 | </li>
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| 34 | <li>
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| 35 | <p><b outputclass="bold">Storage.</b> <ph conkeyref="vbox-conkeyref-phrases/product-name"/>
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| 36 | emulates the most common types of hard disk controllers. See
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| 37 | <xref href="harddiskcontrollers.dita#harddiskcontrollers"/>. Whereas supporting
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| 38 | only one of these controllers would be enough for
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| 39 | <ph conkeyref="vbox-conkeyref-phrases/product-name"/> by itself, this multitude of storage adapters
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| 40 | is required for compatibility with other hypervisors. Windows
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| 41 | is very selective about its boot devices, and migrating VMs
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| 42 | between hypervisors is very difficult or impossible if the
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| 43 | storage controllers are different.
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| 44 | </p>
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| 45 | </li>
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| 46 | <li>
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| 47 | <p><b outputclass="bold">Networking.</b> See
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| 48 | <xref href="nichardware.dita#nichardware"/>.
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| 49 | </p>
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| 50 | </li>
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| 51 | <li>
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| 52 | <p><b outputclass="bold">USB.</b>
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| 53 | <ph conkeyref="vbox-conkeyref-phrases/product-name"/> emulates the most common USB host
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| 54 | controllers. See <xref href="usb-support.dita"/>.</p>
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| 55 | <p>The emulated USB controllers do not communicate directly with devices on the host.
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| 56 | Instead they communicate with a virtual USB layer that abstracts the USB protocol and
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| 57 | enables the use of remote USB devices. </p>
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| 58 | </li>
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| 59 | <li>
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| 60 | <p><b outputclass="bold">Audio.</b> See <xref href="settings-audio.dita"/>.</p>
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| 61 | </li>
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| 62 | </ul>
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| 63 | </body>
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| 64 |
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| 65 | </topic>
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