Peripherals

Ports

• Serial Ports
• USB root hub connects to the controller and to the devices which are called the USB bus
• A single host controller supports up to 127 USB devices

USB

USB Type-C

• Uses 24 Pins, can be inserted in either oreintation and fully supports USB 3.1
• Also supports other busses such as Thunderbolt, display and power
• USB Type-C is quickly replacing Micro-USB
• Numerous manufactures make USB A to B adapeters

Troubleshooting

• Operating systems typically come with USB drivers. Check drivers.
• Mismatch between required power and provided power.
• Some USB devices can sleep and won’t wake back up by default.

Thunderbolt

• Developed by Intel and Apple
• USB 2.0, for data, video, and audio
• Thunderbolt 1 and thunderbolt 2 use the mDP mini displayport
• Thunderbolt 3 uses a USB Type-C connector
• Thunderbolt chains can go to 3 devices and 60 meters
• Speeds: 10, 20, 40, Gbps

Common Peripherals

• Keyboards
• Mouse
• Touchpad
• Biometric devices
• Smart card readers
• Barcode scanners/QR scanners
• Touch screens
• KVM switches
• Game controllers and joysticks
• digitizers
• Multimedia devices
• Digital cameras
• Webcams
• sound processors, speadkers, and microphones