
Step1
Right Click My Computer -->
Step2
Select Properties -->
Step3
Select Device manager -->
Step4
Select Ports --> (if you cant find any modem port, then directly go to modem) Go to your modem port -->
Step5
Click on bits per second and change it to maximum -->
Step6
Click Flow control and change it to none -->
Step7
In ports --> Go to Advanced --> make sure Use FIFO buffers is checked --> and receive and transmit buffers should be on max.
Thats it your modem speed is increased and now surf the internet with new speed.