Start with evidence
Keyboard TestPress keys and verify that the browser receives the expected keyboard events.
→Webcam TestOpen your webcam locally to verify that the browser can access and display a live camera stream.
→Microphone TestCheck whether your browser can detect your microphone and receive live audio.
→Left Right Speaker TestPlay left and right channel tones separately.
→Dead Pixel TestShow solid colors full-screen so you can visually inspect for dead or stuck pixels.
→Device families
laptops, desktops, monitors, docks.
DeviceOK does not publish a model page until it has model-specific data, a relevant test/diagnostic path, and authoritative sourcing. This brand hub is the safe entry point while the model knowledge graph grows.
Model-specific diagnostics
Dell XPS 13 9345Diagnose the XPS 13 9345's display, camera, microphone, keyboard and USB-C path before changing drivers or docks, using Dell's exact USB4, DisplayPort and Power Delivery port specification as the compatibility baseline.
→Dell XPS 13 9350Test the XPS 13 9350 display, keyboard, touchpad, camera, microphones and speakers while keeping its Thunderbolt 4 / USB4 port capabilities explicit during dock and monitor troubleshooting.
→Dell XPS 15 9530Model-specific browser checks for XPS 15 9530 plus exact port-path context for its two Thunderbolt 4 ports and separate USB 3.2 Gen 2 Type-C port.
→Alienware m16 R2Diagnose the Alienware m16 R2 screen, keyboard, touchpad, camera/audio and external I/O while separating the 40 Gbps Thunderbolt path from its 10 Gbps secondary USB-C display path.
→Dell requirements and fit questions
What can the XPS 13 9345 USB-C ports do?Dell documents two USB4 40 Gbps USB-C ports on the XPS 13 9345 with DisplayPort and Power Delivery. That means the ports are intended for supported external displays, compatible USB-C docks/peripherals and charging, but the dock/cable still has to support the feature you are trying to use.
→Does Dell XPS 13 9350 support Thunderbolt 4 and 40 Gbps USB4?Yes. Dell documents Thunderbolt 4 with Power Delivery, USB4, DisplayPort 1.4 and data rates up to 40 Gbps on the XPS 13 9350 Type-C port. Actual device throughput can be lower because the cable, dock, peripheral and storage media all participate in the negotiated path.
→How many external displays can Dell XPS 13 9350 support through Thunderbolt 4?Dell's owner manual states that the Thunderbolt 4 path supports three 4K displays, one 5K display or one 8K display. Whether a particular setup reaches that combination still depends on the dock, adapters, display timings and complete connection topology.
→Are all three USB-C ports on Dell XPS 15 9530 the same?No. Dell lists two Thunderbolt 4 USB-C ports with Power Delivery and one separate USB 3.2 Gen 2 Type-C port with DisplayPort and Power Delivery. They share the same connector shape but not the same interface class.
→Which Alienware m16 R2 USB-C port is 40 Gbps?Dell documents the Thunderbolt 4 port at up to 40 Gbps for USB4/Thunderbolt 4. The separate USB 3.2 Gen 2 Type-C port is listed at up to 10 Gbps. Both can carry DisplayPort 1.4, but they are not equivalent data interfaces.
→When the browser reaches its limit
Dell provides SupportAssist hardware diagnostics plus pre-boot ePSA/SupportAssist diagnostics that can test hardware without relying on the normal operating-system/browser path.
Open Dell SupportAssist & Pre-Boot Diagnostics