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Maxim Devaev 2025-01-20 05:28:25 +02:00
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docs/audio.md
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# PiKVM V3+ Audio
Official [PiKVM V3](v3.md) and [PiKVM V4](v4.md) devices have an exclusive audio transmission feature,
Official [PiKVM V3](v3.md) and [PiKVM V4 Mini/Plus](v4.md) devices have an exclusive audio transmission feature,
including **two-way** communication with microphone directly in the browser.
The incoming stream is captured from the target host via HDMI, the outgoing stream is transmitted to an emulated USB microphone.
@ -16,7 +16,7 @@ This brings the user experience of working with voice applications on the remote
-----
## Speakers (incoming audio)
* On [PiKVM V4](v4.md), this feature is enabled by default, unless you didn't disable it [with custom EDID](edid.md).
* On [PiKVM V4 Mini and Plus](v4.md), this feature is enabled by default, unless you didn't disable it [with custom EDID](edid.md).
* On [PiKVM V3](v3.md), this is disabled for historical reasons so as not to break old user's configurations
that was created before audio support was introduced.

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docs/usb.md
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PiKVM V2+ emulates a small set of USB devices to ensure normal operation: a keyboard, [mouse](mouse.md) and [mass storage drive](msd.md).
However, the possibilities are not limited to this. Optionally, you can add a [USB ethernet](usb_ethernet.md),
[serial port](usb_serial.md), or (exclusive to [PiKVM V3](v3.md) and [V4](v4.md)) [a microphone to support two-way audio](audio.md).
[serial port](usb_serial.md), or (exclusive to [PiKVM V3](v3.md) and [V4 Mini/Plus](v4.md)) [a microphone to support two-way audio](audio.md).
In rare cases, the target host's BIOS/UEFI may not understand such a large number of emulated devices on single USB port,
and some of them may need to be disabled.
@ -29,7 +29,7 @@ Depending on the device, the number of required endpoints varies:
* PiKVM V2-V3 emulates one absolute mouse and one mass storage and uses 4 of 9 endpoints.
* PiKVM V4 also adds a relative mouse by default so it uses 5 of 9 endpoints.
* PiKVM V4 Mini/Plus also adds a relative mouse by default so it uses 5 of 9 endpoints.
You can add other devices remaining endpoints, disable existing ones at all to free some endpoints, or do this only temporarily.
@ -42,7 +42,7 @@ the least important of them will be inactive. You can enable them using dynamic
To configure additional devices, please refer to the corresponding pages:
* [USB Microphone](audio.md) - Two-way audio communication for voice applications on the target host.
Exclusive to [PiKVM V3](v3.md) and [V4](v4.md).
Exclusive to [PiKVM V3](v3.md) and [V4 Mini/Plus](v4.md).
* [Absolute and relative mouse](mouse.md) - The most convenient type of mouse is an absolute mouse,
but some BIOSes may not understand it. In this case, the relative one will help you.
@ -117,7 +117,6 @@ In this case you can disable all devices except keyboard and relative mouse, and
# Endpoints used: 2 of 9
# Endpoints free: 7
- acm.usb0 # [3] Serial Port
- ecm.usb0 # [3] Ethernet
+ hid.usb0 # [1] Keyboard
- hid.usb1 # [1] Absolute Mouse
+ hid.usb2 # [1] Relative Mouse
@ -134,7 +133,6 @@ Exit the BIOS, and turn on mass storage again. Use it as usual to boot the image
# Endpoints used: 4 of 9
# Endpoints free: 5
- acm.usb0 # [3] Serial Port
- ecm.usb0 # [3] Ethernet
+ hid.usb0 # [1] Keyboard
- hid.usb1 # [1] Absolute Mouse
+ hid.usb2 # [1] Relative Mouse