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// USB Physical Connectors

USB 1.1 Type-A (Low/Full Speed)

USB 1.1 Type-A is the original rectangular host-side USB connector supporting Low Speed (1.5 Mbps) and Full Speed (12 Mbps). The foundation of the USB ecosystem introduced in 1996.

// Specifications
Standard
USB 1.1
Pin Count
4
Speed
1.5 Mbps Low Speed / 12 Mbps Full Speed
Voltage
5V VBUS
Current
100mA (low power) / 500mA (high power)
Connector
Type-A rectangular
// Pin Reference Table
Pin Name Function Type
1 VBUS +5V power supply PWR
2 D- Data negative BUS
3 D+ Data positive BUS
4 GND Ground GND