When this model makes sense

A USB-C desk-clamp light for a face or shared camera frame. Start with that job, then check the surrounding connections. A feature on this device does not establish that the computer, software and destination support the same path.

This is part of the current catalog. Current availability in a manufacturer family does not guarantee retail stock, every regional variant or support for every operating-system release. Match the exact model name when reading a product listing.

Three useful fits

  • Light a seated presenter from a stable mount while leaving the camera and microphone in usable positions.
  • Match the stated warm-to-cool adjustment range to the room and camera white balance, then keep that setting consistent across the scene.
  • Reuse an appropriate desk mount and power arrangement, with room for the panel and cable route. Set brightness from the actual powered output, not the maximum alone.
  • Best starting job: a usb-c desk-clamp light for a face or shared camera frame.
  • Upgrade around owned gear: use the setup builder to check this connection against your existing computer and sources before replacing adjacent equipment.
  • Controlled comparison: compare the required input, output and workflow using the lighting layout guide. Choose the smaller sufficient path when extra hardware does not solve a declared problem.

Connections and decision fields

Read connector shape and data protocol separately. An adapter can change the cable ends; it cannot create a faster host controller, add a microphone preamp or convert protected HDMI into a supported capture source.

Exact identity
Elgato Key Light Air MK.2
Lifecycle
Current catalog
Equipment role
lighting
Connector shape
None documented
Host operating systems
Windows 11+ for Control Center; macOS 13+ for Control Center
Required Software
Control Center optional; manual touch controls available
Power input
USB-C Power Delivery; 30 W+ for full 2100 lm output
Mounts
Included desk clamp; Three 1/4 inch threads; MagSafe ring; magnetic mount not included
Dimensions
33 × 319 × 207 mm (D × W × H)
Included parts
Key Light Air MK.2; USB-C to USB-C cable (250 cm); Desk mount with clamp; Quick Start Guide
Brightness
Up to 2100 lm; output depends on power source
Color Temperature
2900–7000 K
Color Rendering
CRI above 94
Power Draw
Up to 30 W
Weight
735 g light only
Data protocol
USB; Wi-Fi2.4/5 GHz
Mount Height
60–88 cm
Wireless Security
WPA/WPA2/WPA3
Onboard Controls
Brightness,color temperature and presets

Use the listed modes as a starting point for the connection. Before a live session, select the exact source in OBS and record it with the other devices connected. If the required mode is absent, lower the output or change the connection before replacing the source.

Check these conditions first

  1. The main limitation: Full brightness needs a 30 W or stronger USB-C power supply. Use the included desk clamp; the original Air stand is a different design.
  2. The rest of the path: the operating system must recognize the input, and the production application must expose the selected mode. A device visible in a system panel may still be unavailable to OBS if another application owns it.
  3. The session conditions: check the full intended duration with all the other devices connected. A short isolated test does not expose shared USB contention, camera runtime limits, accidental monitoring loops or changing household upload.

For a light, check the stand or clamp against the actual desk and keep the power path separate from control. Place the light for the face and camera exposure first; do not assume a bigger fixture fixes glare, glasses reflections or mixed room color.

If the builder reports a hard blocker, solve that requirement before buying an alternative. A conditional result needs the named check. An unknown result means the information is insufficient; it is not a negative review of this model.

What is included, and what may be missing

  • Key Light Air MK.2
  • USB-C to USB-C cable (250 cm)
  • Desk mount with clamp
  • Quick Start Guide

Write down both cable ends and the required data rating. Check length against the real desk route, allowing slack at moving joints without putting tension on a socket. If a host has USB-A and a device arrives with only a C-to-C cable, choose a suitable data cable or adapter; the host’s underlying data speed still applies.

Mounting parts deserve the same check as signal cables. Confirm thread, clamp thickness, load and available space where these apply. “Mount compatible” is incomplete without the mating connector or dimensions. Keep adapters in the plan so the final wiring sheet does not conceal an extra purchase.

Use the optional cost fields in the builder for amounts you have observed yourself. A missing purchase amount stays unknown and is excluded from the known subtotal; it is never shown as a free item. The site does not display hardware prices or stock.

Place it in the complete setup

YOUR SIGNAL PATHSingle computer
  1. CameraUSB video → computer / OBS
  2. MicrophoneUSB audio → computer / OBS
  3. Headphones3.5 mm ← microphone monitor
  4. Stream outputComputer Ethernet → router → platform

Detailed wiring diagram · scroll to follow the path →

View the connection diagram
Video, audio and network connectionsCamera video and microphone audio connect by USB to the computer running OBS. OBS sends the stream by Ethernet through a router to the platform. Headphones return the monitoring mix from the microphone.USB videoUSB audio3.5 mm · monitorEthernetUploadCameraWebcam · USB outMicrophoneUSB out · headphonesYour computerUSB inputs → OBSHeadphonesYour monitoring mixRouterLAN → internetYour streamPlatform previewPower → hostDirect USB example. Select your gear to check the exact ports.
━━ Video┄┄ Audio··· Network┄ Power

The diagram illustrates a direct USB setup. Put Elgato Key Light Air MK.2 in its lighting role, then follow each required input to an actual source and each output to an actual destination. For an HDMI or XLR component, insert the required capture device or interface between the source and host; do not interpret the direct USB illustration as a universal connection.

  1. Connect mounts and power before plugging in the signal cables. Keep the input gain or monitor volume low while changing connections.
  2. Select the exact device and mode in the operating system and production software. Close any second application that may be using the same video device.
  3. Add each source once. If a routing application already feeds the capture audio to OBS, do not enable a second direct route for the same sound.
  4. Record a representative sample with speech, movement and other sources active. Play it back independently of the live monitoring path.
  5. Test the platform preview with the intended network and output settings, then save a recovery scene and reconnection order.

Use the Setup Path Builder to produce a connection ledger, or go directly to the pre-stream checklist when you have finished the wiring. For the underlying choice, see lighting layout.

Sources

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