CRU Mouse Jiggler User Manual
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PMS 711
2 cyan
85 magenta
76 yellow
10.25.12
CRU Mark
1. Installation
Plug the Mouse Jiggler into your computer’s USB port.
That’s it! The Mouse Jiggler prevents your computer from going to sleep or 
displaying the screen saver by automatically moving the mouse pointer. You 
can continue to use your computer while Mouse Jiggler is plugged in and 
working in the background. To customize your MJ-3’s mouse movement, or add 
emulated button clicks or keystrokes, begin by downloading the free utility from 
www.cru-inc.com/mj3
.
Unplug the Mouse Jiggler to return to your normal screen saver and sleep mode 
settings.
2. Finding Mouse Jiggler’s Serial Number in Windows
To	find	the	vendor	ID,	product	ID,	and	serial	number	of	the	Mouse	Jiggler	you	have	
plugged into your computer, follow the instructions below. The text displayed on 
the	final	window	contains	all	three	pieces	of	information.	
a. Connect the Mouse Jiggler to the computer.
b. Open the Control Panel. For Windows Vista and Windows 7, open the Start
Menu, and click on Control Panel.
For Windows 8 and 8.1, press 
WINKEY + X and click on Control 
Panel.
c. Under the Hardware and Sound
category, click on View devices 
and printers. Or, if you are viewing 
the Control Panel as icons, click on 
Devices and Printers.
d. Right-click on USB Input Device
and select Properties.
e. Select the Hardware tab and
double-click on HID-compliant 
mouse to open the HID-compliant 
mouse Properties window.
f. Select the Details tab. Click on the
Property drop-down box and 
choose Device instance path.
The last set of numbers listed in the Value 
string under the “Device instance path” 
property represents the serial number of the 
Mouse Jiggler MJ-3.
