Everything connected.
WHAT INPUT DEVICES DO
Provide data to the system: keyboards, pointing devices, scanners, cameras, microphones.
WHAT OUTPUT DEVICES DO
Present results: displays, printers, speakers.
WHAT DUAL-PURPOSE DEVICES DO
Both: touchscreens, network interfaces, storage.
WHAT CONNECTION TYPES EXIST
Universal serial connections, in several generations and connector shapes Display connections, of several kinds Network connections Wireless connections
WHAT CAUSES MOST PERIPHERAL PROBLEMS
Drivers Cables Power Connection selection
WHAT TO CHECK IN THAT ORDER
Whether it has power Whether the cable works, by substitution Whether the correct input or port is selected Whether the driver is present and current
WHY SUBSTITUTION FIRST
A cable is the cheapest thing to eliminate.
WHAT TO KNOW ABOUT CONNECTOR GENERATIONS
The same shape may support different speeds and capabilities.
WHAT THAT EXPLAINS
A device working but performing poorly on one port and not another.
