Use volume keys to select and confirm with the Power button. Optimization Settings
The long-running technical debate over Samsung's proprietary processors has reached a new, specific bottleneck for power users, developers, and hardware technicians: the phenomenon. This occurs when a Windows machine identifies a Samsung mobile phone as an Exynos USB Device (4.0.0.0) in Windows Device Manager, typically accompanied by extreme thermal spikes (overheating) .
Finally, "hot" can refer to two things:
On a rooted Android or Linux-based Exynos device, check: exynos usb device4000 hot
This paper analyzes the thermal behavior, root causes, and mitigation strategies for the reported "Exynos USB Device4000 hot" issue: elevated temperatures observed on devices using Samsung Exynos SoCs when the USB Device4000 controller is active. It synthesizes SoC architecture, USB controller operation, thermal measurements, firmware/driver interactions, and practical remedies for engineers and system integrators.
lsusb -v -d 04e8:
In the near future, we can expect to see Exynos-powered devices that take full advantage of USB Device 4000 Hot, enabling new use cases such as: Use volume keys to select and confirm with the Power button
Stop using the phone immediately if you suspect a battery problem, and take it to a authorised service centre for inspection and replacement.
| Term | Meaning | |------|---------| | | Samsung’s ARM-based System-on-Chip (SoC) family. | | USB Device | A peripheral connected via Universal Serial Bus. | | 4000 | Not a standard USB error code. Likely a vendor-specific product ID (PID) or part of a kernel device string (e.g., usb 1-4: new high-speed USB device number 4 ). Could also be a misread of -110 (timeout error). | | Hot | Usually means hotplug (dynamic connect/disconnect). In some contexts, refers to thermal issue (overheating USB controller/device). |
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This is the most effective fix for the Exynos USB Device (4.0.0.0) error.
: If you are working on an opened device or a development board, disconnect the physical battery connector.
If you do not want to modify your kernel, try the following software tweaks: