



















Plugable 250x Digital USB Microscope with Observation Stand
SKU: USB2-MICRO-250X
List Price : $39.95
Amazon Rating :
(6142 Reviews)
Features
- HOBBY FOCUSED—Useful and fun for students, collectors, testers, and anyone interested in exploring the microscopic world. Includes a microscope camera yet cannot be used as a document camera
- HIGH DEFINITION—2.0 Megapixels, up to 250x magnification (Note: Final magnification corresponds to monitor size)
- BROAD COMPATIBILITY—Electronic microscope uses a webcam chipset and sensor to support nearly any operating system using standard webcam software. Users with an Oculus Rift may require additional setup
- INTEGRATED LIGHTING—LED halo light with brightness adjustment control. The microscopes flexible arm stand with observation pad includes graduated marks for easy measurement or use as a handheld microscope
- 2 YEAR WARRANTY—We love our Plugable products, and hope you will too. All of our products are backed with a 2-year limited parts and labor warranty as well as Seattle-based email support
Explore the World at the Microscopic Level With Plugable’s Digital USB Microscope!

Great for kids, hobbyists, and professionals, the Plugable 250x USB 2.0 Digital Microscope (USB2-MICRO-250X) allows you to work quickly and effectively at the microscopic level. Common uses include classroom exploration, stamp or coin analysis, micro-soldering, garden parasite identification, and much more.
This adaptable tool can be used either with the included stand for lower magnifications, handheld for quick point-and-click inspection, or placed directly on subjects for the highest magnifications. The rugged plastic body makes it ideal for children, classrooms, or industrial applications.
Features

Built-In Lighting
The Microscope includes built-in LEDs that can be dialed through a range of brightness levels to properly illuminate your subject. Unlike many other USB microscopes, these LEDs shine through a diffuser to combat glare.
This is especially useful when viewing reflective objects like coins. Instead of harsh glare, the diffuser gives even light distribution across the object being viewed.

Capacitive Capture Button
We used a capacitive touch button to initiate image capture rather than a physical push button.
When observing small objects at microscopic levels, a small bump can offset an image to an imperceptible state. With a capacitive button, the lightest touch snaps a blur-free image.
Image capture can also be initiated from within the downloadable companion software, along with video or configurable time-lapse capture.

Versatile Stand
Easily analyze the surface of objects large and small at any angle by positioning the flexible gooseneck precisely where you want it.
With a suction cup mount and a graduated observation stage, you can attach the microscope to any smooth surface and use the various graduation marks to measure specimens.
If the stand doesn't quite meet your needs, no problem! All fittings have 1/4"-20 TPI threads, which almost all camera mounts use. Create your own stand for your specific purpose.
Magnification Info and Package Contents

60x Magnification
Start by viewing objects at 60x magnification with Plugable's Digital Microscope. Look to the next image to see the resolution calibration at 250x.

250x Magnification
Adjust to 250x magnification to see the microscopic world! See cells and particles not visible to the human eye.

In the Box
- 1x Microscope body
- 1x Observation stage
- 1x Suction cup
- 1x Gooseneck
- 1x C-clip
- 1x Quick start guide
In The Box
Item and Quantity | Item Notes |
---|---|
1x Plugable USB 2.0 Digital Microscope (2MP, 250x Magnification) | |
1x Observation Stage | |
1x Suction Cup | |
1x Gooseneck | |
1x C-Clip | |
1x Quick Start Guide |
Video Capture Modes
Video Capture Source | Data interface | Video Formats | Audio Formats | Video Capture Resolutions | Other Features |
---|---|---|---|---|---|
Camera Sensor | UVC | YUY2 (USB 3.0+ Only) or MJPEG | No Audio | 640x480 @ 30Hz |
Image Capture Modes
Data Interface | Capture Resolutions | Image Format | Features | Chipset |
---|---|---|---|---|
UVC | 1600x1200 | JPEG | SN9C292A Sonix |
Power
Port | Placement | Power Host / Device | Connection Type | Notes | Voltage | Amperage | Wattage |
---|---|---|---|---|---|---|---|
USB-A to Host | Cable End | Host | Bus Powered (No Power Adapter) | 5.0V | 500mA | 2.5W |
Connection To Host
Port | Placement | Version and Link Rate | Features |
---|---|---|---|
1x USB-A | Cable End | USB 2.0 (480Mbps) |

Windows
USB Video Class (UVC) support is built in to all versions of Windows from XP and above. This includes Windows 11, 10, 8.x, 7, Vista, and XP. Companion software is available on our website that allows finer control of the device, or any other video capture software can be used.
macOS and OS X
Mac computers with OS versions 10.5.x and above have built-in support for USB Video Class (UVC) devices. Companion software is available on our website that allows finer control of the device, or you can use any video capture software, including Photo Booth (with limitations).
Linux
Linux distributions with kernels 2.6.26 and above have built-in support for USB Video Class (UVC) devices. Works on Raspberry Pi Os. We recommend using Cheese, or GTK+ UVC Viewer.
Chrome and Android
Works on all Chrome OS devices with the built-in Camera application. Android compatibility isn't guaranteed. Many newer Android devices support the microscope using an OTG cable and a separate viewing application. Select Android devices may not work, and it's up to the device manufacturer to support external cameras. We suggest to check with the manufacturer of your Android device for official information.
iOS
iOS devices (iPhones, iPads) are not compatible with external cameras and cannot use our USB2-MICRO-250X Microscope.
- Install software and drivers from our Plugable drivers page
- Plug the microscope into any USB port
- Open previously installed microscope software
- In settings, ensure the microscope is the selected device
Questions? We're here to help! Please reach out to us at Support@plugable.com.
Windows Setup Video

macOS Setup Video

For video guides on how to use Plugable USB microscopes. Please see the links below.
Platform | Important Notes | Date | Version and Download |
---|---|---|---|
Windows 11, 10, 8.x, 7, Vista, and XP (for both 32-bit and 64-bit) | Digital Viewer 3.1.07 | ||
macOS 10.13.x and Above | Digital Viewer 3.3.30 | ||
macOS 10.5.x to 10.13.3 | Digital Viewer 3.1.08 | ||
Linux | We have tested our microscope with many Linux distros utilizing either the Cheese app or GTK+ UVC Viewer. These can either be installed by searching by app name through the app store in your Linux distro (if available), or by using the following terminal commands. GTK+ UVC Viewer sudo apt-get install guvcview Cheese sudo apt-get install cheese |
||
Android | Using the microscope on an Android device requires an OTG cable. We recommend the app CameraFi 2, available on Google Play . Note: Android support is on a case-by-case basis. Device manufacturers must have support for USB Video Class devices built-in or this will not work. |
||
Chrome OS | No additional software is needed. Please see Google's guide to capturing photos and video, just use the microscope as your source. |
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You can always contact support if you need help too!
"Camera being used" error or no image in preview window
Some specific device classes, such as USB cameras, are handled differently by operating system privacy/security settings. If you aren't seeing an image output from the microscope, or you see a message that your "Camera is being used by another application", you may need to change these privacy/security settings.
Instructions for Windows
- Press the or click on the Windows key to open the Start Menu, and type "Settings" into the search bar.
- Then, click the gear-shaped icon to open up the Settings menu.
- In the settings, click Privacy.
- Click Camera, on the left hand side menu.
- Now, we can see that the ability for the system to Allow access to the camera on this device is off. We also see that the ability for the system to Allow apps access to your camera is off as well. Please note, one or both of these options may be off for you.
- Click Change, to turn on the ability for the system for the system to Allow apps access to your camera. Then, click to Allow apps to access your camera, click the little button to toggle it from off to on.
- Now, we should see that the Camera access for this device is on, and the ability for Windows to Allow apps to access your camera is on as well.
- We can double check this by scrolling down on this page to make sure the Digital Viewer software is listed.
- Restart the computer after confirming the privacy settings are on. Once the computer reboots, please open the Digital Viewer program only. We want to make sure to leave other programs closed so we have a clean environment to test the microscope.
Click on the gear-shaped icon in the in the top left corner of the Digital Viewer window to enter the Settings. Then, click on the drop-down menu for Device, and pick the USB Microscope. Then click Apply to make the change.
- Now, you should see the USB Microscope is set as the default device. Feel free to change the resolution or other settings, and start examining things!
Click Here, to see an official article from Microsoft if you'd like to get further details about privacy and security settings.
Instructions for macOS
- Click on the Apple Menu icon in the top left of your screen, and then click on System Preferences.
- Click on Security & Privacy to open more options.
- Click on Privacy, and then on Camera. You should see a listing for the Digital Viewer, and may see other other camera programs and capable apps listed as well.
- Check the box next to the Digital Viewer listing. Depending on your settings, you may need to click the lock at the bottom of the screen and put your password in to authenticate changes. Restart the computer once the Digital Viewer is checked.
- Restart the computer after confirming the privacy settings are on. Once the computer reboots, please open the Digital Viewer program only. We want to make sure to leave other programs closed so we have a clean environment to test the microscope.
Click on the gear shaped icon in the top left corner of the Digital Viewer window to enter the Settings. Then, click on the drop-down menu for Device, and pick the USB Microscope. Then click Apply to make the change.
- Now, you should see the USB Microscope is set as the default device. Feel free to change the resolution or other settings, and start examining things!
Click Here, to see an official article from Apple if you'd like to get further details about privacy settings for your Mac.
We hope this was helpful! Feel free to reach out to us directly at support@plugable.com if you have any questions or concerns, and we'll be here to help you.
Thank you
Microscope LEDs do not come on and no image is visible
You must manually launch Digital Viewer or another webcam suite in order to use the microscope, nothing happens automatically when the microscope is attached to a USB port. The microscope’s LEDs won’t turn on unless the device is being accessed by an application.
Digital Viewer preview shows output from my other webcam
First, make sure that the microscope is set as the default device in the Settings menu. The Settings menu can be opened by clicking on the grey gear-shaped icon in the upper left corner of the Digital Viewer window.
In some cases, the devices in this menu have the wrong name. If you have the microscope selected in this menu and still see output from another webcam, try selecting each device in this menu until the preview window shows output from the microscope.
Windows Camera Mix-up Issues
Windows has a specific issue that can pop up with the microscope. The microscope uses the same USB Video Class drivers as most built-in and external cameras which can cause Windows to mix-up the listing.
If you set the microscope as the default device but see your other camera its likely that the listing was mixed up. To check if listing was mixed up, try picking your other camera from the drop down menu, and see if the microscope view shows up instead.
If the microscope view shows up on your monitor after picking your other camera, the listing was mixed up. There are steps that we could try to see if we can fix the listing. We do need to be clear, that as this is a Windows issue, it may reoccur with Windows Updates and other events. Let's give these steps a try to see if it clears the listing up:
- Press the Windows Key, and type in Device Manager. You should see a listing for the Device Manager in the search. Click on it to open the Device Manager
- Now that we have the Device Manager open, click on View, and choose Show Hidden Devices. We want to be sure to remove all entries related to the microscope
- The microscope should show up in the Cameras section, but it may show up in Imaging Devices. Click the little arrow on these sections to expand the listings, and find the "USB Microscope" Listing (In the picture below, mine is right next to the on-board camera Windows is confusing it with.) You may see other listings that appear faint, or grayed out, which is why we checked for Hidden Devices
Once you've found the listing(s), try these steps:
- Right Click on the USB Microscope, and click to Uninstall Device for each listing you see
- A message will pop-up telling you that you're about to uninstall the device from your computer. Click Uninstall to proceed
- Restart the computer after the microscope has been uninstalled. After you restart, open the Digital Viewer software only, and check to see if the microscope shows up when you set it as the Default Device.
We hope this was helpful. Feel free to reach out to us directly at support@plugable.com with any questions or concerns.
Thank you!
Microscope not working on iPad, iPhone, or other iOS device
Regrettably, iOS does not support external USB cameras, so no device that runs iOS will work with any USB camera.
How to launch Digital Viewer
Windows
This location will vary slightly depending on which version of Windows you are using. More information on the start menu can be found at the following page.
https://support.microsoft.com/en-us/help/17195/windows-10-see-whats-on-the-menu
Mac
Locating Digital Viewer
Microscope not working on Android device
Android support is on a case by case basis. The manufacturer of the Android device must allow USB webcams or this will not work.
When I plug in the microscope, it is only listed as an Audio device and I have an Oculus Rift
The microscope uses the same chipset as the Oculus DK2 sensors making the system believe it is just an additional Oculus sensor. In order to help the operating system correctly identify the microscope as a USB camera, we must change which driver the microscope uses. The steps below should correct this problem.
- Disconnect all Oculus Rift devices.
- Connect the microscope.
- Open the Device Manager in Windows. This can be done several ways, if you’re uncertain how to access Device Manager perform these steps:
- Press the Windows key and R (Win + R).
- In the window that pops up, type devmgmt.msc, then click OK
- Look for the microscope. It will likely be listed as a Rift DK2 sensor, under Oculus VR Devices.
- If you’re not certain if you found it, disconnect the microscope and the entry should disappear. Reconnect the microscope and the entry should come back, that’s how we’ll know for certain we’re looking at the correct device.
- Once you've identified the microscope, right-click on it and choose Update Driver > Browse My Computer For Driver Software > Let Me Pick From A List Of Device Drivers On My Computer
- Select USB Video Device, then click Next to complete the driver installation.
NOTE: After completing these steps, Windows will still name the microscope as "Rift DK2 Sensor". To confirm these steps worked, look for an entry for Rift DK2 Sensor under Imaging Devices. You must select "Rift DK2 Sensor" to use the microscope in Plugable Digital Viewer or other applications.
All I see is a black screen with no image. How can I fix this?
From the factory, the LED control is in the off position. For most indoor lighting conditions, you will need to turn the LEDs on by rotating the grey light control wheel in order to see anything.
In some cases, this happens because the software does not have permission to access the microscope. If so, security settings in your operating system must be modified.
Achieving the Maximum File Size Limit in Plugable Digital Viewer
In a recent review of the Digital Viewer software, a typo was discovered in the maximum file size limitation instructions under Movie Setup. When the maximum file size is entered as shown (4097 MB), the following error message is displayed: “Video size setting is incorrect; out of range.” As a workaround, customers should enter 4096MB (or lower) as the maximum file size.
Make sure to click ‘Apply’ after your changes have been made.
Note: The Maximum File Size is a limitation of the software currently and may be raised at a later date in an updated version. We will update this document accordingly at that time
We hope this was helpful! Please feel free to reach out to us directly at support@plugable.com, if you have any further questions.
Thank you!
I have a Chromebook and the microscope, but can't get it to work. What do I do?
With microscopes on Chromebook, we need to be sure to check a few things:
-
We need to make sure that the Chromebook operating system is up to date. To do so, go into
Settings > About Chrome OS > Check for updates
. If an update is available, please let it run. (Click here, for official information from Google about updating.)
- After that, let's check and make sure that the Camera app is the current version from the Chrome Webstore: Chromebook Camera App
- Restart the Chromebook after the updates to make sure they finalize
- After reboot, connect the microscope and launch the Camera App
- In the bottom left hand corner, there is a button with two arrows rotating around a circle. This button is there to "Switch to next camera". Click the button to switch over to the microscope
We hope this was helpful. Feel free to reach out to us directly at: support@plugable.com if you have any further questions or concerns.
The Digital Viewer program keeps taking pictures and won't stop! What do I do?
It sounds like the Time Lapse mode is on. This mode will continually take pictures at preset intervals until you click the button again to Stop Time Lapse.
Let's check and see if Time Lapse mode is on:
- Open the Digital Viewer software
- Hover your mouse over the icon of a camera with a clock inside, and see if a message pops up that says Stop Time Lapse
- Click the button and the Time Lapse mode should stop
We hope this was helpful! Please feel free to reach out to us directly at: support@plugable.com with any other questions.
Thank you!
I have the microscope plugged into my computer, but, it isn't working. Do I need software?
Yes. Our Plugable USB2-MICRO-250X Digital USB Microscope must be used with software to process, display, and capture images and video.
Where can I get the software?
We offer our free Digital Viewer software package for use with the microscope on Windows and macOS! You can also use other camera software packages such as:
-
Windows Camera on Windows
-
Photo Booth on macOS
-
Webcamoid on Windows , macOS, and Linux
-
Cheese on Linux , and very useful on Raspberry Pi systems
- Google Camera on Chromebooks . Chromebooks use the built in Camera application, and need to be updated regularly for overall functionality. You may want to check with your Chromebook manufacturer for more information about your model
Great! I've downloaded and installed some software. What do I do now?
We need to start the software, and set the microscope as the default device. Using our Digital Viewer software as an example, here's some basic steps to get you started:
- Restart the computer for changes from installation to take full effect
- Plug the microscope in to a USB port
- Start the software, and go into the Settings menu by clicking the Gear-shaped icon in the top left corner of the Digital Viewer screen
- Then, click on the drop-down menu and set the microscope as the default device. Click Apply when you're finished
You should now be able to see the microscope image appear, and be ready to examine things! This is a fairly typical setup for most camera programs. But, it's always a good idea to review any instructions from the application developer for specifics.
We see a lot of people use the microscope for their coin and stamp collections, plants, circuits, and other hobbies. Here's an example of a few items under the microscope, including a speckled vinyl record, some moss spores, and a quarter:
We hope this was helpful! Have you found some new camera software we should test out? Feel free to reach out to us directly at support@plugable.com and let us know, or if you have questions or concerns.