The ProScope HR and HR5 and related replacement parts and accessories have been discontinued and are no longer available.

A suitable replacement is the USB Digital Microscope

For details about ProScope kits, accessories and replacement parts, see:
https://www.vernier.com/products/proscope/

Troubleshooting
– Primary Test: Make sure you are using the latest version of the both the ProScope HR drivers and the USB Shot software. Free updates are available at:

Downloads

Using ProScope with a Computer and Logger Pro
How do I determine the type of ProScope I have?
Logger Pro uses the built-in iSight camera and won't let me choose a DV or Proscope HR for video capture.
What are the differences between Logger Pro and Logger Lite?
Logger Pro 3.5 plays back videos poorly on my Mac.
How do I use the ProScope with specimens on a glass slide?

Bodelin’s ProScope HR software
http://www.bodelin.com/proscope/software
Will the original ProScope (non-HR) work with current computers and ProScope HR software?

Using ProScope with another scope
I can not connect my ProScope to a dissection scope. What is wrong with my Tube Adapter?
My field is too bright when trying to view a slide with a ProScope connected to a microscope. All I see is a white image.
Is there a way to get the ProScope to focus when used with a microscope?

ProScope lenses, packages and accessories
See web site for details and pricing:
https://www.vernier.com/products/proscope/
Do you carry the 400x lens for ProScope?

Product Specifications
ProScope HR
Image sensor: 1/4″ inch high resolution 1.3 megapixel sensor
Connection type: USB
Image capture resolutions:
-320×240 pixels
-640×480 pixels
-1280×1024 pixels
Video capture resolutions:
-320×240 pixels @ 30 fps
-640×480 pixels @ 15 fps
-1280×1024 pixels @ 3.75 fps

ProScope HR2
Image sensor: 1/3″ inch high resolution 2.0 megapixel sensor
Connection type: USB
Image capture resolutions:
-320×240 pixels
-640×480 pixels
-1280×1024 pixels
-1600×1200 pixels
Video capture resolutions:
-320×240 pixels @ 30 fps
-640×480 pixels @ 15 fps
-1280×1024 pixels @ 3.75 fps
-1600×1200 pixels @ 2.5 fps