USB to 2 x RS232 adapter. Two COM ports via the USB port

USB-C to Straight-Through RS232 serial adapter
With DB9 male
With 3 x data monitoring LEDs (TX, RX, PWR)
COM port assignments are maintained across reboots
Max Baud Rate: 921.6 Kbps | 1, 1.5, 2 stop bits
Odd, Even, Field, Space, No Parity Mode
Hardware Flow Control (CTS/RTS and/or DSR/DTR)
Software Flow Control (XON/XOFF) | Chipset: PL2303-GC
Compatible with Windows®, Mac OS and Linux

Compliance: USB 1.0/1.1 compliant, USB 2.0 compatible
12 Mbps USB data rate
Baud rate: 50 bps to 921.6 Kbps
Drivers provided for Windows, WinCE, and Linux
Serial Standards: RS-232/422/485 Connector: DB9 male
LEDs for indicating USB and TxD/RxD activity
Optical Isolation: 2 KV
OS support: See in Description
Windows 11 support
Linux Support : Linus 2.4.x, 2.6.x, 3.x

Get a RS485 or RS422 or RS232 port on the PC via the USB port
Galvanic isolation (optical) 2KV
DB9 male and screw terminal to 232/422/485 connection
Termination by Jumpers
Baud rate 300bit / s two 921.6 kbit / s
selectable RS232, RS422 and RS485 via DIP switch
Supports Win7 / 8/10 and over as well as MAC
Powered through USB (5V)
Operating Temp . 0 ° to 55 ° C,

Get a COM port on the Android Tablet or Android phone via USB port

Connect 1 x RS232 equipment to Android Tablet / phone
Connect to micro USB port on the Tablet / Phone
Baud rate up to 921.6 kbit / s