4 Port Professional RS-232 USB 2.0 to Serial Adapter
FTDI USB-to-Single Port Serial Adapter (USB1PFTDI) - Astro-Physics
Amazon.com: C2G 26886 USB to DB9 RS232 Serial Adapter Cable, 1.5 Feet Long, Blue : Electronics
USB 2.0 To Serial DB9 Male (9 Pin) RS232 Cable Adapter - Sabrent
Belkin USB 3.0 4-Port Hub + USB-C Cable - Apple
High-Speed USB-to-Serial Adapter for Windows 8 32/64-bit - U.S.Converters
Large Selection of USB-RS232 adapters, Easy Installation and Setup of USB RS232 COM ports.
USB 2.0 A Male To A Male High-Speed 480 Mbps Cable - 3Feet Black
13-in-1 USB-C Multi-Port Hub | CODi Worldwide
Amazon.com: vantisan USB Hub 3.0 Powered, 7 Ports USB Data Hub Splitter with One Smart Charging Port and 5V/4A Powered Adapter and ON/Off Switches for MacBook, Mac Pro/Mini, iMac, Surface Pro Laptop/PC :
1 Port USB to RS232 DB9 Serial Adapter - Serial Cards & Adapters | StarTech.com
USB to RS232 DB9/DB25 Serial Adapter - Serial Cards & Adapters | StarTech.com
Tripp Lite RS232 to USB Adapter Cable with COM Retention (USB-A to DB9 M/M), FTDI, 5 ft. - USB / serial cable - USB to - U209-005-COM - USB Cables - CDW.com
C2G 1.5ft USB to DB9 Serial Cable - RS232 Adapter Cable - Serial adapter - USB - RS-232 - blue | Dell USA