When this mode is triggered improperly—due to software corruption or hardware failure—the chipset can "cycle" or draw excessive power, leading to the device becoming physically to the touch. Common Causes for Overheating in This State
Ошибка при подключении USB-носителей - SYSAdmins.ru
Before assuming it's a hardware death, try these "soft" fixes: Force Restart: Press and hold the Power Button + Volume Down
cat /sys/class/thermal/thermal_zone*/temp
If your device is stuck in EUB mode (common after a failed firmware flash), the PC will always see it as an Exynos USB Device . To exit EUB mode: exynos usb device4000 hot
: Under the "Ports (COM & LPT)" or "Universal Serial Bus devices" section of the Windows Device Manager, a connected device is registered exactly as SEC, SYSTEM LSI Exynos USB Device 4.0.0.0 .
: Cracked solder joints beneath the main System-on-Chip (SoC) or a short circuit on the power lines forces the processor into an infinite hardware-reset loop. Why the Device Gets Extremely Hot
| 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). |
lsusb
Despite high performance, Exynos processors are renowned for efficient power consumption, ensuring that even when USB-powered, they don't drain the host device's battery quickly. Conclusion
If you connect a USB device that draws more current than the phone is designed to supply, the USB interface can overheat. The problem is made worse by the fact that the phone’s battery is being drained at a high rate while also staying awake to service the OTG device. Prolonged use of OTG with a power‑hungry accessory is a reliable way to turn the USB port region hot.
When in doubt, remember: the Exynos USB Device label is just Windows trying to guess the wrong driver. Correct the driver, and your USB device will return to life.
If you are comfortable with modifying your phone, you can permanently fix many USB‑related overheating issues by installing a custom kernel that includes the latest Exynos USB gadget and thermal driver patches. When this mode is triggered improperly—due to software
Caused by:
Entertainment is no longer limited to a television set. The brings a cinematic experience to any screen via USB-C, ensuring that streaming and gaming are fast, responsive, and of the highest quality. 4K Streaming and Display
If your Samsung smartphone is completely unresponsive and your computer's Windows Device Manager detects it as under the COM ports section, your device is trapped in Exynos USB Booting (EUB) mode . When this state is accompanied by the phone or the motherboard getting significantly hot , it points to a critical software crash or a hardware short-circuit.