Why has USB Type-B never been used?

1, The Historical Background of USB Type-B
The USB Type-B interface, also known as the USB B-type interface, was first widely used in the era of USB 1.1 and USB 2.0. Its original design intention was to meet the demand for higher data transfer rates and more stable power supply for some large devices, such as printers, scanners, external hard drives, etc. Compared to the USB Type-A interface, the USB Type-B interface has a larger physical size and higher load-bearing capacity, thus providing better stability and durability.
2, Limitations of USB Type-B
Although the USB Type-B interface has certain advantages in design and functionality, it also has some obvious limitations that limit its popularity and application in the market.
Large physical size: The USB Type-B interface has a larger physical size, which is not conducive to use on small devices. With the popularity of mobile devices, miniaturization and portability have become a trend, which has gradually led to the loss of market for USB Type-B interfaces.
Compatibility issue: Due to the incompatibility between the USB Type-B interface and the USB Type-A interface, users need additional converters or adapters during use, which undoubtedly increases the complexity and cost of use. Meanwhile, this also limits the popularity of the USB Type-B interface in the market.
Transmission rate limitation: Although the USB Type-B interface can provide higher transmission rates in the USB 2.0 era, with the introduction of new generation interface standards such as USB 3.0 and USB 3.1, the transmission rate of the USB Type-B interface can no longer meet market demand. The new generation interface standards not only provide higher transmission rates, but also have better compatibility and lower power consumption.
3, Market trends and alternative solutions
With the continuous progress of technology and changes in market demand, the USB interface market has also shown some new trends and alternative solutions.
The rise of USB Type-C interface: As a new generation interface standard, USB Type-C interface has smaller physical size, higher transmission speed, and better compatibility. It supports multiple functions such as forward and reverse plugging, fast charging, and data transmission, gradually becoming the mainstream interface standard in the market. The rise of USB Type-C interfaces has led to the gradual elimination of USB Type-B interfaces.
The popularization of wireless transmission technology: With the continuous development of wireless transmission technology, more and more devices are supporting wireless connection methods such as Wi Fi and Bluetooth. These wireless connection methods not only have higher flexibility and convenience, but also enable data transmission over longer distances. Therefore, in some application scenarios, wireless connection methods have gradually replaced traditional USB connection methods.