< USBs are used to connect a variety of devices. USB is 29 Years Old started in 1995 Universal Serial Bus (USB) is an industry standard that defines the cables, connectors and communications protocols used in a bus for connection, communication, and power supply between computers and electronic devices. USBs, are connectors that connect computer peripherals (including keyboards, pointing devices, digital cameras, printers, portable media players, disk drives and retwork adapters) to personal computers, both to communicate and to supply electric power, USB superseded a variety of earlier interfaces, like parallel ports, that required separate power chargers for portable de-vices besides Serial port, game port, Apple Desktop Bus, and PS/2 connector. Now it has become common place on most devices, like smartphones, PDAs and video game con soles Today, every PC on the market con-Tains at least 4 ports for USB connections at the back and 2 in the front. USB stands for Universal Serial Bus, and it's a standard that allows devices to connect to computers and exchange data.
Type of USB connector:
USB Type-A
USB type-a is the most common and widely recognized USB connector. Here are its key features: Physical Design Rectangular shape with a flat, standardized design.Non-reversible (must be inserted in one direction).
USB TYPE-B
USB Type-B is a connector type commonly used for connecting peripheral devices like printers, external hard drives, and some older smartphones. Pysical Design square shape with slightly beveled corners on the top.
USB TYPE MINI -A
The USB Mini-B connector is a smaller version of the standard USB Type-B connector, commonly used for connecting compact electronic devices. Here are its key features: Physical Design smaller than USB Type-B but larger than Micro-USB,Typically has 5 pins (instead of 4 in the standard Type-B),Trapezoidal shape for a secure connection.
USB TYPE MINI -B
USB Mini-B is a now mostly outdated USB connector type that was widely used in older portable devices such as digital cameras, MP3 players, and some early smartphones. Here are its key features Compact Design: Smaller than the standard USB Type-B, making it ideal for portable devices. 5 Pins: Unlike the standard USB Type-B, which has 4 pins, the Mini-B has 5 pins, with the extra pin (ID) used for OTG (On-The-Go) functionality.
USB TYPE MICRO-A
USB Type Micro-A is a small, rectangular USB connector primarily used in older mobile devices, tablets, and accessories.Compact Size – Designed for small devices like smartphones, GPS units, and portable electronics.
USB TYPE MICRO -B
USB Type Micro-B is a compact connector widely used for charging and data transfer in small electronic devices. Here are its key features:
Physical Design
Smaller than USB Type-A and Type-B, designed for portable devices. Features five pins (compared to four in older USB connectors), allowing OTG (On-The-Go) functionality. Has a trapezoidal shape with a slightly tapered end for a secure fit.
USB TYPE MICRO -B 3.0
USB Micro-B 3.0 is a connector type commonly used for external hard drives, portable storage devices, and some smartphones and cameras. It is an upgraded version of the standard Micro-B connector, designed to support USB 3.0 speeds and enhanced power delivery.
Design: Has a wider, two-part design:One section resembles a standard Micro-B connector.
The additional section provides extra pins for higher data transfer rates.Not compatible with standard Micro-USB ports but can accept a Micro-B 2.0 plug in the smaller section.
USB TYPE -C
USB Type-C is a versatile and widely adopted connector standard for data transfer, power delivery, and video output. Here are its key features: Reversible Connector Can be plugged in any direction, eliminating the frustration of incorrect insertion.
1.Fast Charging & Power Delivery (PD)
Supports USB Power Delivery (USB-PD) up to 240W (with Extended Power Range - EPR).
Enables fast charging for smartphones, laptops, and other devices.
2. Video & Audio Transmission
Supports DisplayPort and HDMI over USB-C for external monitors.
Can deliver 4K, 8K video, and high-quality audio
3. Universal Compatibility
Used in laptops, smartphones, gaming consoles, external drives, and docking stations.
Compatible with Thunderbolt 3 and Thunderbolt 4.for even higher performance.
5. Multi-Functionality Can handle multiple tasks simultaneously, like charging, data transfer, and video output.
USB connector speed
For easy to understand
USB TYPE --> SPEED TITLE --> BANDWITH--> TRANSMIT SPEED
• USB 1.0--> Low speed--> 1.5 Mbps--> 187.5KB/s (192000Bytes/s)
• USB 1.1--> Full speed --> 1.5 Mbps--> 1.5 MB/s (1500KB/s)
• USB 2.0--> Hi-speed --> 480 Mbps--> 60 MB/s (60000KB/s)
• USB 3.0--> Super speed --> 5 Gbps--> 610 MB/s (625,000KB/s)
• USB 3.1--> Faster super speed+ --> 10 Gbps
• USB 3.2--> multiple lanes for higher speed --> 20Gbps
• USB 4.0--> support thunderbolt 3 and faster data transfer --> up to 40 Gbps.
