I would like to transfer data from a USB Host (of my Laptop or Android Device) to Serial COM port (of a Desktop PC) through a USB - Serial port(DB-9) adapter. UsbSerial: A serial port driver library for Android v4.5. Android serial port driver, Android USB serial port. A serial port driver library for Android v4.5 ”.

Prolific announces the world's first and only Android USB Host API driver solution (NO root permission needed) for connecting PL2303 USB-to-Serial devices to Android-powered devices with USB Host mode support. Customers can now develop Android software (APP) based on the Android driver library provided by Prolific. The PL2303 USB-to-Serial chip not only provides driver solutions for Windows/Mac/Linux but now also for Android OS platforms.

The PL2303 Android driver library allows customers and developers to write Android applications to interface their UART/ RS232 / RS422 / RS485 devices with millions of Android USB host devices like Smartphones, Tablets, and Smart TVs. This is just a terminal program, not used in the above specific device applications, such as GPS, cash register, modem.etc. I believe this will work for some people, but it doesn't work for me and my Toshiba Thrive. I have two adapters with prolific PL 2303 chips and neither one works with this program but both work with other Android terminal software. The interface is clean and light and simple and I like that so I'm giving it two stars anyway.

Ok, checked, and apparently I have the HXA chip. Prolific reports it's not compatible with their more recent drivers, and could even be a fake chip. Program Kerja Osis Bidang Olahraga Renang there. :-(.