PARALLEL rows.
Typically, modern printers connect using USB. You will need to find a free USB port on your computer to plug it in. Older printers (as well as decreasing numbers of newer printers) connect via a parallel port. A parallel port is a somewhat rectangular port (rounded edges) with two rows of sockets (25 sockets in all). To see a graphic of a parallel port, go here: http:/images.google.com/images?q=paralell+port
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USB port (Universal Serial Bus) replaces the parallel port
Parallel ports typically have 25 or 36 pin ports. Serial ports, by contrast, have only 9 pins. Both type of ports have two rows of pins.
parallel port if you want to know why go to it140 if you know what that is.
That depends on how many are installed. One used to be standard on the motherboard. Some modern PCs have deleted that port since USB is much easier to use. If your machine has PCI or other expansion card sockets you can buy parallel port expansion cards and add several. It is also possible to add parallel ports using USB to parallel port adapters.How many do you want?
Parallel Port
A video port has 15 pins (3 rows of 5 each) A video port, also known as a Serial Port, has 3 rows of 5 pins which is 15 pins.
A DB-25 port is a type of connector that has 25 pins arranged in two rows. It was commonly used for serial and parallel interfaces on older computer equipment such as printers, modems, and early networking devices.