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.
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)
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