Yes, it does have a microphone, as well as a built in webcam.
Yes
yes i have this laptop and it comes with a built in microphone as well
Unfortunately, it does not.
Yes.
The Dell Inspiron Model 531 does not include an integrated microphone. It does, however, have two 3.5mm jacks for microphone input (one in front and one in rear)
It has a microphone port. but no built in microphone into the laptop.
No. You will have to use an external microphone.
download the device driver at the manufacturer's website
Check the Dell website. If its a newer laptop chances are it has one unless its really cheap.
The microphone is located above the screen by the webcam.
No, but it does have a microphone built into the speakers just above the power button.
Yes, the Dell Latitude D620 comes with a built in microphone although I am not completely sure where it is physically located on the computer. **It's on the keyboard bezel right between the 'home' key and the LED for the WiFi on the hinge cover, there is a tiny hole.