Amazon.co.jp: SABRENT RS-232 USB Extension Cable 5.9 ft (1.82 m) / Prolific Chipset USB Serial Converter Cable / Hex Nut / Compatible with PS5 PS4 Xbox Mice Tablet Gaming PC PC Mini
USB 2.0 RS-232 Serial Adapter with LED Indicators
Amazon.co.jp: BENFEI USB to Serial Adapter, USB to RS-232 Male (9 Pin) DB9 Serial Cable, Rich Chipset, Windows 11/10/8.1/8/7, Mac OS X 10.6 or later, 1.8M : Computers
Amazon.co.jp: UGREEN RS232 USB Serial Converter Cable, USB 9 Pin Converter Serial Cable, D-sub9 Pin, Compatible with Windows and Mac OS, 3.3 ft (1 m) : Computers
USB to RS-485 コンバータ REX-USB70[RATOC]
USB to RS232 DB9 Serial Adapter Cable - Serial Cards & Adapters | StarTech.com