Im going to teach you step by step on how to increase the number of usb ports available on your computer. This could cost you under $10 or free.

Step 1: Materials

TOOLS and MATERIALS:
wire strippers/cutters
solder and solder iron (You do not have to solder, but it is recommended)
knife
electrical tape
needle nose pliers

1 usb cord with a male end.
2 or more(I used 2) usb female ends

You can get these materials for under $10. I had these laying around. You can go to the goodwill and pick some up, or a store, or a garage sale.

Step 2: Stripping

strip all of the wires you have which should be:
wire for male end
2 wires for female ends.

pull back the shiny wires and reveal the colored wires.

Step 3: Connecting the Wires

I have already made this before showing you, so i will just show you how to do 1 wire.

After stripping ALL of the wires, you should be left with 3 white, 3 black, 3 red, and 3 green wires.

twist each wire to its corresponding color. ie:green to green, red to red.

Step 4: After Connected

After you've connected them all, you should have something that looks like the diagram I've drawn.

KEY:
red ink=red wire
black ink=black wire
blue ink=white wire
green ink=green wire

Step 5: Solder the Wires(optional) and Tape

After twisting the wires together, you may want to solder them to ensure a good connection.

When the solder cools down, tape each individual wire.

Step 6: Tape Up All of the Wires

Now you want to tape all of your wires to avoid exposure. Tightly wrap tape around your previously taped wires.

Step 7: Decorative Case(optional)

You may want to enclose your new usb ports into something to protect them. In this case, I used legos. You want to ensure a tight fit, so take your time.

Now you have multiple usb ports, instead of one. You can also encase all of your wires into one box aswell.

enjoy:)