1st number:

CST1??? - All models with a model number in the one thousands and below will be mechanical optical devices.

CST2??? - All models with a model number in the two thousands will be laser devices.


2nd number:

CST?0-5?? - Determines the color of the device.

0 = Full beige case, cable and ball

1 = Beige case, cable and black ball

3 = White case with blue, red, green buttons, yellow ball and beige cable.

4 = Clear case, clear cable and blue ball

5 = Full black case, cable and ball


3rd & 4th number:

CST??00 – configuration of buttons and cable type.

45 = USB/PS2 connection with true three buttons.

50 = USB/PS2 connection with drag/scroll default to the middle button.


Sample: CST1350 – A mechanical optical device that has a white case with blue, red, green buttons, yellow ball and beige
cable. Using a USB/PS2 connection with drag/scroll default to the middle button.


Note: A few devices will not follow the same numbering convention (I.E. CST800 and CST650)


Suffix Key


SA – Switch Adapted: Can have all buttons relocated to external buttons, disabling the onboard buttons.

-5 – Allows the users to expand the number of buttons up to 5.

Pro – True three buttons

W – Uses a scrolling wheel located in front of the middle button (only available on laser units)


Note: Some suffixes can be combined like CST2345SAW or CST2545-5W