Adsl Modem Cooling Fan Mod

In this hot summer days, your modem may be get crashed in cause of high temperatures. and high temperatures can make your modem work slower. just a small fan can make your modem cool enough. cause you just need to supply air circulation.
here's the things we'll need:

-cutting blade
-soldering iron
-a piece of soldering wire
-knife
-nail cutter
-double-sided adheshive tape
-a computer fan of your choice
note: the fan should use the same voltage with the modem, and the modem+fan power(generally in mA unit) shouldn't exceed power adaptors power. example, my modem wants 800 mA, and fan needs 170 mA. my modems adaptor can give up to 1000mA realtime. this is okay.
-your modem, of course.

in this step, you need to decide to where will you open the hole.
after this, heat your soldering iron, and open the hole. then fine edges with nail cutter.

first, place a piece of tape under the fan(air out side).
thenshape it with cutting blade.

note: if you want to mount your fan with screws, you wont need this step.

remove the protect paper-film on the tape. then place it on the air hole. do not forget to take the power cables to the inside.

first, test you fan to solder it in right "current direction"(?). then solder it to power pins on your modem board.

reassembly your modem. and start using it!