COMPUTER PHYSICAL and LOGICAL PORTS

		Connector	Devices	Description
		RJ45	10/100/1000Base T Networks	Registered Jack-45, an eight wire connector use for networking
		BNC/F	10Base2 or Cable Modem	Bayonet Nut Connector use with RG58 coaxial cables or F port use with cable
		RJ11	Telephone or Modem Connector	Registered Jack-11 a four or six wire connector use for Internet connections
		DIN/5	AT Keyboard	Deutsche Industrinorm connector that is use to connect an AT keyboard
		PS/2	ATX Keyboard or Mouse	Personal System 2 connector or ATX connector developed by IBM to connect an ATX Keyboard (purple) or Mouse (green)
		Centronics	Parallel Printer end Connection	A standard interface for connecting parallel printer devices
DB Connectors
		Parallel Port	Parallel Devices (Printer, Scanner, External Devices and Zip Drives)	Bi-Directional ECP 8 bits wide 1.5Mbps-2.77Mbps EPP 4 bits wide 600Kbps LPT address
		SCSI_50	SCSI Devices	3 rows use by External SCSI devices
		SCSI_68	SCSI Devices	2 rows use by External SCSI devices
		Analog Video Port or VGA Port	Analog Monitor Port	3 rows with 15 holes use by CRT or LCD monitors found on video cards
		Digital Video Interface Port	Digital Monitor Port	Digital Video Interface use by the newer LCD monitors found on newer graphics cards
		Display Port	Display Port	Display Port use for video
		HDMI Port	HD Signals	Use by HDTV technology 1080 or 720 most common
		MIDI Port	Joystick, Game and MIDI devices	2 rows 15 holes found on sound cards
		Serial 9 Port	Serial Mouse, PDA, Modem and Digital Camera	2 rows male 9 pins 1 bit wide transfer 57-115Kbps Backwards compatibility COM address
		Serial 25 Port	Serial Modem, Printers and Scanners	2 rows 25 pins Obsolete
High Speed Connectors
USB_A	USB_B	USB Ports	USB Devices (Keyboards, Mouse)	1. Hot Swappable 2. Speed USB 1.0 1.5Mbps USB 1.1 12Mbps USB 2.0 up to 480Mbps USB 3.0 up to 4.8Gbps 3. Daisy Chain 127 Devices
4 Pin	6 Pin 9 Pin	Firewire or IEEE 1394 Ports	Firewire Devices (High Speed Multimedia Devices Video Cam or iPOD devices)	1. Hot Swappable 2. Speed IEEE1394_a 400Mbps IEEE1394_b 800Mbps IEEE 1394 1.61600 IEEE 1394 3.2 3200 3. Daisy Chain 63 Devices
ST MTRJ	SC LC	Older Fiber Optic Ports	Fiber Optic Connections	1. Immune to EMI 2. Very Fast 3. Can Travel great distances
		Thunderbolt aka LightPeak	High Speed Connection use by Apple to connect various devices