Usb Vid-214b Amp-pid-7250 Amp-rev-0100
If your device is a DVD writer, corrupted filter drivers are the #1 cause. Warning: Editing the registry incorrectly can break your system.
This device ID string — USB VID_214B PID_7250 REV_0100 — identifies a specific USB product and revision. Below I review what that identifier implies, how to interpret and troubleshoot it, and practical examples of real-world workflows for users and developers interacting with such a device.
What the string means
Why that matters
Typical device categories with similar IDs
Hands-on examples
Example: If Device Manager shows VID_214B&PID_7250 and the device appears as “USB Composite Device” or “Unknown,” search vendor resources for a Windows driver that lists VID 0x214B / PID 0x7250.
Example: An embedded sensor with VID_214B PID_7250 may enumerate as /dev/ttyUSB0; a udev rule makes it available as /dev/my_sensor.
Example: After updating to REV_0200, the device may add a virtual COM port and change PID; you’d need to update udev rules and drivers.
Practical troubleshooting checklist
Risk and compatibility notes
Conclusion VID_214B PID_7250 REV_0100 is a concise fingerprint that unlocks driver selection, firmware awareness, and integration steps. For power users and developers, the VID/PID directs where to look for drivers, how to write udev rules or custom USB code, and whether firmware updates or PID changes will require system-side adjustments. Armed with the ID, the practical next steps are: locate vendor documentation or driver packages for VID 0x214B, verify whether REV_0100 needs updating, and set up stable OS-level naming (udev/INF) for reliable access.
If you’d like, I can:
Based on the hardware identifiers provided, here is the "story" of your device:
The string "USB VID_214B PID_7250 REV_0100" is the digital fingerprint of a Huasheng Electronics USB 2.0 Hub. The Identity usb vid-214b amp-pid-7250 amp-rev-0100
Vendor ID (VID) 214B: This identifies the manufacturer as Huasheng Electronics.
Product ID (PID) 7250: This specific ID is almost exclusively used for their 4-port High-Speed USB 2.0 Hub controller.
Revision (REV) 0100: This indicates the first firmware version (v1.00) of the chip. Where You’ll Find It
You aren't likely to see "Huasheng" on the box. Instead, this internal chip powers various affordable, third-party peripherals, including:
USB Switches: It is the brain inside AIMOS AM-UK404 4-in-4-out KVM switches.
Budget Hubs: It often appears in generic 4-port expansion hubs like those from GINZZU (specifically the GR-315UB model).
Embedded Systems: It is frequently used to add extra ports to Raspberry Pi setups or other small Linux-based projects. Common "Plots" (Issues)
If you are looking this up because of a technical problem, users commonly report:
Intermittent Connection: These chips can sometimes be picky with power. If it’s failing, it might show up as an "Unknown USB Device" in Windows Device Manager or fail to boot properly on a Raspberry Pi.
Speed Caps: While it claims "High-Speed," it is strictly a USB 2.0 device, meaning its maximum theoretical transfer speed is 480 Mbps.
Are you trying to fix a connection issue with this hub, or are you just curious about what's plugged in?
USB hub only recognised intermittently - Raspberry Pi Forums
The USB hardware identifier VID_214B&PID_7250 identifies a USB 2.0 Hub manufactured by Ameco Technologies (Shenzhen) Co., Ltd. . Specifically, this ID is often associated with the 4-port hub controller chip. Hardware Identification
USB devices use specific numerical codes to allow operating systems like Windows, Linux, and macOS to identify them and load the appropriate drivers. Vendor ID (VID): belongs to Ameco Technologies (Shenzhen) Co., Ltd. Product ID (PID): signifies a USB 2.0 Hub Revision (REV): If your device is a DVD writer, corrupted
refers to the specific firmware version or hardware revision of that chip.
This identifier frequently appears in low-cost consumer electronics, such as 4-port USB splitters, KVM switches (like the AIMOS AM-UK404), and integrated laptop hubs. Driver Information For the vast majority of users, no manual driver installation is required
USB hub only recognised intermittently - Raspberry Pi Forums
Here’s a ready-to-use post for a tech forum, support thread, or blog comment section regarding the USB device with VID_214B & PID_7250 & REV_0100.
Title: Help identifying USB device – VID_214B PID_7250 REV_0100
Post:
I’m trying to identify a USB device that shows up in my system with the following identifiers:
VID_214B
PID_7250
REV_0100VID 214B is known to belong to HuawaiWei (or a generic USB bridge controller), but this specific PID doesn’t match common Huawei modems. Some digging suggests it could be:
What I’ve tried so far:
Hardware context:
This came from a cheap USB programmer/TTL adapter purchased online. No markings on the PCB.Questions:
Thanks in advance for any clues!
If you need this post for a different platform (e.g., Reddit, Twitter, GitHub issue) or a different tone (shorter, more technical, or troubleshooting-focused), let me know and I’ll adjust it.
The hardware identifier USB\VID_214B&PID_7250&REV_0100 represents a High-Speed USB 2.0 Hub typically manufactured by Huasheng Electronics. This specific chipset, often identified as the HS8836A, is a common component in affordable 4-port USB hubs and KVM switches, such as those from brands like AIMOS or Maxxter. Technical Breakdown of the ID VID_214B (Vendor ID): Assigned to Huasheng Electronics. Why that matters
PID_7250 (Product ID): Specifically identifies the 4-port USB 2.0 Hub or HS8836A chip.
REV_0100 (Revision): Indicates version 1.0 of the device's firmware. Common Applications This identifier is frequently found in:
Standalone USB Hubs: Budget-friendly, non-powered 4-port expansion hubs.
USB Switches/KVMs: Devices that allow multiple computers to share a single set of peripherals.
Internal Hubs: Occasionally used inside laptops or specialized peripherals (like monitors with built-in ports) to expand connectivity. Driver Information
Because this device identifies as a standard Generic USB Hub (Class 09), it does not require proprietary drivers.
Windows: Automatically uses the native usbhub.sys driver included with all versions of Windows from XP to Windows 11.
Linux: Recognized by the kernel's usbcore as a standard hub, appearing in lsusb as "Huasheng Electronics USB2.0 HUB". Troubleshooting Connectivity Issues
If your device is showing up as "Unknown USB Device" or "Link in Compliance Mode":
One of the most valuable uses of VID/PID data is in data recovery tools. If a USB drive becomes corrupted and cannot be read, technicians use the VID and PID to identify the controller model. Once the specific controller (e.g., a Toshiba TC58 series) is identified, they can use mass production tools (MPTool) to "low-level format" the drive, often restoring functionality when standard formatting fails.
Additionally, these IDs help identify "fake" drives. Fraudulent sellers sometimes program cheap, low-capacity drives to report a higher capacity to the OS. If a supposed "1TB drive" reports a VID/PID combination associated with a cheap 8GB controller model, it is an immediate red flag.
In corporate IT environments, knowing the VID and PID allows administrators to create specific policies. For example, using Group Policy in Windows, an admin could block all devices with VID 214B to prevent employees from using unauthorized specific flash drives.
When a computer encounters VID: 214B and PID: 7250, it is almost certainly communicating with a flash memory storage device.
More specifically, this ID pair is frequently associated with Toshiba TransMemory USB sticks or generic flash drives utilizing Toshiba memory controllers. Toshiba (now Kioxia) has long been a dominant player in NAND flash memory.
Common Scenarios for this ID: