USB to standard 9-pin / DB9 serial port. - Supports RS232 serial interface. - Cable Length: 0.8M (approx.).
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USB 3.2 Digital Display Adapter 10Gbps USB Male TO USB Female Converter Fast Charging Data Transafer USB C Adapter For PC Laptop
Aliexpress UK
Single chip USB to asynchronous serial data transfer interface. Synchronous and asynchronous bit bang interface options with RD and WR strobes. RS232 signals: CD RXD TXD DTR GND DSR RTS CTS RI. Support Bits per second Data transfer rates from 300 baud to 921600baud (RS232 ) at TTL levels.
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11-in-1 USB C Docking Station USB 3.0 HUB Type C to HDMI Adapter USB C HUB USB C Splitter Adapter OTG For PC Laptop Macbook Pro
Aliexpress UK
Plug-in USB2.0 9PIN to 2 9PIN. 1 plug-in USB2.0 9Pin to dual 9Pin Male adapter. Use this product, two USB2.0 9pin interfaces can be expanded on the motherboard USB2.0pin interface, which is very convenient.
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USB C 3.5 Jack Audio Cable USB C To 3 5 MM Jack Aux Adapter Phone Accessories Cabo Adaptador USB Tipo C USB C Adapter HeadPhone
Aliexpress UK
Easily convert computer USB interface to universal serial port, providing a fast channel for computers without serial ports. The product is equivalent to turning traditional serial port devices into plug and play USB devices.
eBay
USB C 3.0 Adapter Type C To USB 3.0 Adapter for Mobil Phone Male To Female USB C Converter USB Type-C Converter for PC Laptops
Aliexpress UK
Desktop motherboard 9PIN to USB2.0 adapter. Motherboard 9-pin female header expand USB2.0 A female interfaces. Type:2 port upward.
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1/2/3/4/5PCS OTG USB Adapter Type C To USB 2.0 Adapter A Male To Female USB C Converter USB Type-C Connector for PC Laptop Phone
Aliexpress UK
Features: Brand new and high quality Full compliance with USB2.0 specification.Support RS232 serial interface. Supports automatic handshake-mode.Supports wake-up and intelligent power managements. Provides dual-buffer for upstreams and downstreams data transfer. Strong material ensures strength and durability for long lasting usage. Replaces old/broken/crack/damaged/bad adapter. Specifications: Material:ABS Color:Black Package Includes: 1x USB 3.0 to RS232 9 Pin Adapter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.
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4G LTE USB Network Adapter Wireless WiFi Hotspot Router Modem Stick USB WiFi Modem Hotspot USB Modem Stick USB Network Adapter
Aliexpress UK
USB 3.0 20Pin Male to USB 2.0 9Pin Female Motherboard Adapter Cable. Enables your USB 3.0 20 pin device to connect to a USB 2.0 motherboard. 1 x USB 3.0 to 2.0 Short Cable. Length: Approx.16 cm.
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USB 2.0 HUB USB 3.0 Power Adapter Multi USB Ports Power Adapter Expander USB Multi Port Splitter With Switch For Laptop Computer
Aliexpress UK
One connect to motherboard 9pin port, split to 2x 9-Pin. USB 2.0 9 Pin Splitter Motherboard USB 9 Pin 1 To 2 Extension Adapter 9 Pin USB HUB USB2.0 Connectors For RGB Lamp Fan. 1x Motherboard USB 9 Pin 1 To 2 Extension Adapter.
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USB Type C Female to Micro USB Male Adapter Converter 90 Degree Micro USB Left Right Angle to USB-C Connector Converter Adaptor
Aliexpress UK