Thank you for your purchasing our pointing device. In order to use the pointing device driver version 8.5 correctly and efficiently the driver commands are listting as belows: Usage : MOUSE [1-4] [/X] [P,B] [0,U] [/H/?] 1. Help : MOUSE /H (or /?) --- Display Help Screen 2. Device port setting : MOUSE /1 --- COM1:(03F8,IRQ4) MOUSE /2 --- COM2:(02F8,IRQ3) MOUSE /3 --- COM3:(03E8,IRQ4) MOUSE /4 --- COM4:(02E8,IRQ3) 3. Mouse type setting : MOUSE /P --- Use PS2 & compatible Mouse on Pointing Device Port MOUSE /B --- Use Bus Mouse (2 button) on Bus Mouse Port 4. Release driver : MOUSE /0 (or OFF)--- Uninstall Mouse Driver and Free memory