Usb Vid-214b Amp-pid-7250 Amp-rev-0100 [portable] ✦ Trusted

: Users have reported that hubs with this ID may only deliver USB 2.0 data throughput even when connected to USB 3.0 ports. Power Stability

(Vendor ID). This is a unique, 2‑byte (16‑bit) code assigned by the USB Implementers Forum (USB‑IF) to every manufacturer of USB devices. Think of it as the company’s “license plate.” When you see VID_214B , you know the device was made by Huasheng Electronics , a Chinese manufacturer that produces many USB‑related components.

The USB identification details you provided correspond to a common USB 2.0 High-Speed Hub

: Physical USB ports on the front panel of computer towers degrade over time. Try plugging the device into the rear ports directly soldered to the motherboard. usb vid-214b amp-pid-7250 amp-rev-0100

This is the most critical identifier. Assigned by the USB Implementers Forum (USB-IF), it is a unique 16-bit number given to a specific vendor.

controller. This hardware is often found in both standalone multi-port hubs and as an integrated component within other devices like keyboards, monitors, or docking stations. STMicroelectronics Community Device Identification Vendor ID (VID) 214b : Manufactured by Huasheng Electronics (also associated with Ameco Technologies Shenzhen). Product ID (PID) 7250 : Specifically identifies a 4-port High-Speed (HS) Hub Revision (REV) 0100 : Indicates the initial firmware or hardware version ( STMicroelectronics Community Key Features Plug and Play : This device typically uses the native Generic USB Hub

VID 214B is known to belong to , but this specific PID doesn’t match common Huawei modems. Some digging suggests it could be: : Users have reported that hubs with this

lsusb

Devices like the AIMOS AM-UK404 , which allow sharing multiple USB peripherals (keyboard, mouse) between multiple computers.

: This specific ID is almost exclusively used for their 4-port High-Speed USB 2.0 Hub controller . Think of it as the company’s “license plate

Several Raspberry Pi users have reported that this hub is recognised only when connected to a Pi 3 or Pi 4. The system logs show the hub enumerating correctly ( New USB device found, idVendor=214b, idProduct=7250 ), but it later fails to stabilise, often with USB errors like -71 (protocol error).

A recent Windows update may have altered the driver binding, requiring a refresh.

This came from a cheap USB programmer/TTL adapter purchased online. No markings on the PCB.

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