Sabrent USB 2.0 to Serial (9-Pin) DB-9 RS-232 Converter Cable (CB-DB9P).
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Vention USB C to USB Adapter OTG Cable Type C to USB 3.0 2.0 Female Cable Adapter for MacBook Pro Xiaomi Mi 9 Type-C Adapter
Aliexpress UK
USB to standard 9-pin / DB9 serial port. - Supports RS232 serial interface. - Cable Length: 0.8M (approx.).
eBay
USB 3.0/USB 3.0 + Type-C Slim DVD External Enclosure 9.5mm/12.7mm USB To SSD Caddy External Mobile Enclosure for Laptop Notebook
Aliexpress UK
✅USB to RS232 DB9 Adapter – Converts USB signals to RS232 for serial devices. 1 ×USB to RS232 Serial DB9 Adapter Cable (length approx. Devices withRS232 DB9 9-Pin Serial Port. ✅Plug & Play – Works straight out of the box on most Windows systems. ).
eBay
NEW USB Connector USB Extension Cable USB2.0 to 9Pin Conector 9 Pin Male to External USB A Male PC Mainboard Internal Data Cable
Aliexpress UK
The UGREEN USB to RS232 DB9 Serial Adapter Cable is a plug-and-play device that allows for easy data transfer from computers to serial devices. With a 1:1 connection split and a USB Type A connector, this cable is compatible with Windows 11, 10, and 8. The grey cable is 1 metre long and weighs 101 grams, making it a compact and efficient solution for connecting to serial devices. With a special data transfer feature and an output voltage of 5 volts, this Ugreen adapter is a reliable choice for those needing to convert USB to RS232 connections.
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NEW USB HUB USB2.0 9pin Connector Adapter 9Pin USB Header 1 to 2 Card Board Desktop 9-Pin SATA Power Cable + 30cm USB 9Pin Cable
Aliexpress UK
USB To Serial Converter. Converts a USB port into 9 pin Serial (Male).
eBay
9-in-2 USB 3.2 HUB 10Gbps Data Transfer Aluminum Alloy USB Docking Station USB Splitter with Card Reader For PC Laptop Macbook
Aliexpress UK
USB to standard 9-pin / DB9 serial port. - Supports RS232 serial interface. - Cable Length: 0.8M (approx.).
eBay
9-in-2 USB 3.2 HUB 10Gbps Data Transfer Aluminum Alloy USB Docking Station USB Splitter with Card Reader For PC Laptop Macbook
Aliexpress UK
Support the RS232 Serial interface. Transfer your RS232 device to a USB device. Colour: Blue.
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HL-340 USB to Serial Cable(COM) USB-RS232 USB nine-pin serial cable support win7-64 bit
Aliexpress UK
Connectors: With Standard Usb Type A Male To Standard 9-pin Db9 Rs-232 Serial Connector. This Usb 2.0 To Rs-232 Serial Adapter Connects With Modems, Isdn Tas, Pds, Handheld & Pocket Pcs, Digital Cam, Pos, And Serial Label Printer Devices With Db9 Serial Ports.
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USB 3.0/USB 3.0 + Type-C Slim DVD External Enclosure 9.5mm/12.7mm SATA To USB CD ROM ODD Case Box ODD Caddy for Laptop Notebook
Aliexpress UK