USB Overview
A convenient and reliable way to combine your new PC
and legacy equipment
USB supports high data rates, plug-and-play connections, noise immunity, and “hot swappability” providing an easy connection to a wide variety of multimedia and network USB device. Universal Serial Bus is a serial protocol and physical
layer link. Data is transmitted differentially on one pair
of wires, providing relatively good noise immunity. Another
pair carries DC power to downstream devices, allowing many
low power devices to be bus powered.
Specifications
- Typical Data Rates: 12 Mbps (USB 1.1); 480 Mbps (USB 2.0)
- Max Distance: 5 meters
- Cabling Requirements: Standardized peripheral cable
- Connectors: Type A upstream, Type B downstream
|
|
Pros
- Plug-and-play connectivity
- Hot swapping
- High data rates
- Noise immunity
- Available on most newer PCs
|
Cons
- 5 meters maximum distance
- Not always isolated
- Not often available on industrial/commercial devices
- Lack of locking connectors
|