Navigating the world of USB peripherals can occasionally feel like learning a new language, especially when devices don't play nicely with your operating system. If you recently connected a USB hub to your computer and used hardware manager tools to inspect it, you may have encountered the hardware identification codes and PID_7250 .
It is a high-speed 4-port hub controller often found in standalone USB switches (like those from
Fully compatible with Windows (XP through 11), macOS, and Linux.
The revision tag REV_0100 typically denotes the firmware version. In the world of cheap electronics, this string is vital. If you plug this device into Windows 10 or 11, the operating system often fails to find a driver automatically because the manufacturer did not pay for Microsoft certification. This leads to the device appearing in Device Manager as "USB 28285" or simply "Unknown Device." usb vid214b amppid7250 amprev0100 new
Used in 4-in/4-out USB 2.0 peripheral switches, such as the AIMOS AM-UK404 .
Version 1.00 of the device firmware or hardware specification.
Every USB device connected to your computer has a unique signature that the operating system uses to identify it. This signature is composed of three main parts: Navigating the world of USB peripherals can occasionally
Windows Fix: Open -> Expand Universal Serial Bus controllers -> Right-click Generic USB Hub ( VID_214B&PID_7250 ) -> Choose Properties -> Select Power Management -> Uncheck "Allow the computer to turn off this device to save power."
Let’s decode VID_214B&PID_7250&REV_0100 piece by piece. This is a standard USB descriptor format used by all modern operating systems.
: Devices that allow multiple computers to share the same set of USB peripherals (e.g., keyboards and mice). The revision tag REV_0100 typically denotes the firmware
Here is the breakdown of what that string means and a guide on how to find the correct drivers for it.
: If you need to verify the chip details further, tools like the Flash Drive Information Extractor or USBDeview can provide deeper technical logs.
So, what exactly is it?
Right-click the item, choose , and select the Details tab.
– It will fail signature checks on modern Windows (10/11) unless you disable driver signature enforcement (not recommended permanently).
