Why are there only 4 usb ports on computers?

Answer because so meny peripherals use usbmine has only 4 so i bought a usb hub this gave me 3 more £15 with own power supply

Top Q&A For: Why are there only 4 usb ports on computers

On my compter there are two audio-out ports, but I can only listen to sound from only one port at a time?

They are not designed for what you intend.…

My old printer won't connect to my new PC, which only has USB ports. Is there a way to do it?

Both solutions are valid, installing a parallel port card in an expansion slot or purchasing a usb-parallel adapter.Two important things you may want to consider though.... 1. Buy your cable or car... Read More »

Is there any way to make a USB flash disk can only be accessed / used in certain computers only?

No but you could encrypt the data on the drive so that you needed a password to get to it.You could try something like TrueCrypt.

My pc only some times recognises my usb ports on the front of my case or the 4 ports on my motherboard.?

A few things to try, firstly, you would have to open the case and check the cables for your front ports are seated properly. Unplug them and then plug them back in again.Also check that your mother... Read More »