That's normal behaviour for a device of this type E., the OS is designed to see a serial connection as a network interface, you can simply ignore this. If the driver you've installed is FCP compatible and working correctly then I believe you should see your adapter as an available device control option in FCP.
Usb To Serial Driver Mac Catalina
USB Console Cable, BENFEI 6 ft USB to RJ45 Cable Essential Accesory Compatible with Cisco, NETGEAR, Ubiquity, LINKSYS, TP-Link Routers/Switches for Laptops in Windows, Mac, Linux - FTDI Chip. Replaces RS232 (DB-25/DB-9) serial port perfectly, connects to any laptop/PC's USB. Mac OS X Universal Binary Driver v2.0.0 (PKG file format) For Mac OS High Sierra (version 10.15) - see NOTE below. (Chip Rev A) USB to Serial Controller ICs using Prolific's trademark logo, brandname, and device drivers, were being sold in the China market.
Usb To Serial Driver Download
All StarTech.com product IDs can be identified by a combination of letters and numbers. For example, such as USB2VGAE3 or USB32VGAEH. Typically, the product ID can be found on the unit itself, but it can also be found on the packaging it came in. Connects any serial device with a DB9 female port to your computer USB port. Supports all RS232 serial devices such as printers, modems, barcode scanner, PDA, and digital cameras. It provides speed of up to 12Mbps and full duplex capabilities. When 2 or more UR-2000M2 are used, Windows will dynamically assign available COM RS232 port.