Port Driver | 16c95x Serial
Check if the tx / rx FIFO size reports 128. If it shows 16, the generic 8250 driver is active.
It features on-chip, hardware-managed automated in-band (XON/XOFF) and out-of-band (RTS/CTS) flow control. The Role of the 16C95X Serial Port Driver 16c95x serial port driver
Windows shows an error during driver installation or the port does not appear in Device Manager, often under "Other Devices" as "16C95X Serial Port" or an unknown device. Check if the tx / rx FIFO size reports 128