Usb Vid-214b Amp-pid-7250 Amp-rev-0100 //top\\ Jun 2026

A detailed analysis from the Linux Hardware Project found that this hub with the USB On‑The‑Go (OTG) Battery Charging specification. The internal “Rid” resistances (which signal charging modes) are incorrectly implemented, leading to erratic behaviour when used with OTG adapters on Android devices or single‑board computers.

Uses the native Generic USB Hub driver ( usbhub.sys ) provided by Microsoft.

: Brands like GINZZU (e.g., GR-315UB) often use this controller for their 4-port hubs. usb vid-214b amp-pid-7250 amp-rev-0100

Locate the listing showing an exclamation mark or named Generic USB Hub / Unknown USB Device . Right-click the item and select . Disconnect the physical hub from the computer port. Restart your computer completely.

Here’s a concise technical piece for the USB device with (Vendor ID), PID 7250 (Product ID), and Rev 0100 (Revision): A detailed analysis from the Linux Hardware Project

This VID/PID pattern (VID 0x214B, PID 0x7250) corresponds to a USB audio/interface device from a small vendor that commonly uses the “amp-” prefix in descriptors to indicate an audio amplifier or USB audio interface (external DAC/amp, USB sound card, or portable headphone amplifier). The revision 0x0100 is a typical initial firmware/hardware revision.

The code usb vid-214b amp-pid-7250 amp-rev-0100 identifies a simple, functional, and extremely common USB 2.0 hub from Huasheng Electronics. It works out of the box on nearly all operating systems, making it a convenient solution for expanding your USB ports. However, its performance is strictly limited to USB 2.0 speeds, and its build quality can be inconsistent, leading to occasional reliability issues. It is a budget-friendly device that works best for low-bandwidth peripherals like a mouse and keyboard, but it is not suitable for demanding tasks. : Brands like GINZZU (e

Since this is often a standard USB component, Windows possesses the necessary driver files but may not have linked them correctly. Open ( -> Device Manager).

The most common point of failure for VID_214B&PID_7250 hubs is power starvation. When you attach power-hungry peripherals (like unpowered mechanical keyboards, webcams, or external hard drives) across its 4 downstream ports, the collective draw often exceeds the 500mA budget allowed by a standard host USB 2.0 port.

: Open Device Manager , expand the Universal Serial Bus controllers section, right-click the generic hub matching your hardware ID, and select Properties . Check the Power tab to see the current requirements versus what the port provides. Driver Installation Guide