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Today, the pPHowever, below is a listing of various hardware components that can be purchased and used with the parallel port.

Printer:

The most common use for the parallel port.

Scanner:

Another commonly used parallel device is a parallel port scanner. Parallel port scanners are a popular alternative to SCSI scanners because of how easy they are to install.

External Drives:

Another popular use of the parallel ports are external drives such as the Iomega Zip Drive, which can be removed from one computer and placed onto another.

The term PC Card is being used as a replacement to PCMCIA Card because of the ongoing changes in the technology and because it is much easier to remember. However, PC Card should not be confused with a PCI Card. This technology is becoming replaced by the new ExpressCard standard.

Short for Personal Computer Memory Card International Association, PCMCIA is a trade association founded in 1989 that is responsible for the ongoing development of the PCMCIA standard. PCMCIA cards are hardware interfaces that are slightly bigger than a standard credit card that enable additional functionality for laptop computers and other portable devices.

eSATA does have some disadvantages such as not distributing power through the cable like USB, which means drives require an external power source. The eSATA cable also supports a maximum length of up to 2m. Because of these disadvantages don't plan on eSATA becoming the only external solution for computers.

SCSI-1 is the original SCSI standard developed back in 1986 as ANSI X3.131-1986. SCSI-1 is capable of transferring up to eight bits a second.

SCSI-2 was approved in 1990, added new features such as Fast and Wide SCSI, and support for additional devices.

USB 3.0 devices were first made available in November 2009 by Buffalo Technology, but the first certified devices weren't available until January 2010. The first certified devices included motherboards from ASUS and Gigabyte Technology. Dell began including USB 3.0 ports in their Inspiron and Dell XPS series of computers in April 2011. Today, many devices use the USB 3.0 revision for improved performance and speed, including USB thumb drives, digital cameras, external hard drives, MP3 players, and other devices.

SCSI-3 was approved in 1996 as ANSI X3.270-1996.

USB 2.0, also known as hi-speed USB, was developed by Compaq, Hewlett Packard, Intel, Lucent, Microsoft, NECand Philips and was introduced in 2001. Hi-speed USB is capable of supporting a transfer rate of up to 480 Mbps and is backwards compatible, meaning it is capable of supporting USB 1.0 and 1.1 devices and cables.

Short for Universal Serial Bus, USB (pronounced yoo-es-bee) is a standard that was introduced in 1995 by Intel, Compaq, Microsoft and other computer companies. USB 1.x is an external bus standard that supports data transfer rates of 12 Mbps and is capable of supporting up to 127 peripheral devices. The picture shows an example of a USB cable being connected into the USB port.

SCSI is a standard for parallel interfaces that transfers information at a rate of eight bits per second and faster, which is faster than the average parallel interface. SCSI-2 and above supports up to seven peripheral devices, such as a hard drive, CD-ROM, and scanner, that can attach to a single SCSI port on a system's bus. SCSI ports were designed for Apple Macintosh and Unix computers, but also can be used with PCs. Although SCSI has been popular in the past, today many users are switching over to SATA drives.

USB connectors come in many shapes and sizes as there are many different devices that utilize them. Every version of USB connector including standard, Mini, and Micro have two or more variations of connectors.