Because JMicron does not host drivers for end-users on their main site, you must get the software from your hardware vendor.
To help you properly: If you are seeing "i-jmb mouse software" on your computer (e.g., in installed programs or as a process), it could be:
: Sensitivity can usually be toggled directly on the mouse between 800, 1200, and 1600 DPI to control cursor speed. : Most wireless models are powered by a single AA battery How to Configure Your i-JMB Mouse
i-JMB mice are designed for immediate use without additional drivers.