Null Modem Serial Adapter DB9 Female both sides. Female DB9 on both sides of the adapter. This null modem adapter crosses over the tx and rx pins 2 & 3 on either end and has ground connected. a USB to serial to a Raspberry Pi.
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XIKCU Type Female to Mini USB/Type C Female to Micro USB/Micro USB Female to Type C/Micro USB Female to Mini USB Plug Adapter
Aliexpress UK
Interface:1 R 32 DB9 Female; 1 USB 2.0 Type A Female. R 32 Female to USB 2.0 Female Cable Adapter. 1 R 32 Female to USB 2.0 Female Cable Adapter. Allows you to connects a PC without serial port to a serial device.
eBay
RJ45 to 9-pin female adapter,RJ45 to DB9pin male DB9 female RJ45 to RS232 network port to serial port DB9 pin
Aliexpress UK
DB9 cable to USB adapter is designed for connecting devices. Adapter Cable: USB to Converter is providing USB and RS-232 connection, a RS232 USB to female adapter cable, allowing any PC to connect to devices and programs that communicate through the COM port.
eBay
TypeC Female to Mini USB/Type C Female to Micro USB/Micro USB Female to Type C/Micro USB Female to Mini USB Connector Adapter
Aliexpress UK
6-pin header connector with VCC (5V power) and GND (ground) and RXD, TXD, RTS and CTS of 5V logic level, effectively ensuring stable signal transmission. 1m USB to TTL Serial Adapter (with 6 pins) connects devices with UART signal interface with 5V logic level to laptop via USB port.
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TypeC Female to Mini USB/Type C Female to Micro USB/Micro USB Female to Type C/Micro USB Female to Mini USB Connector Adapter
Aliexpress UK
Interface:1 R 32 DB9 Female; 1 USB 2.0 Type A Female. R 32 Female to USB 2.0 Female Cable Adapter. 1 R 32 Female to USB 2.0 Female Cable Adapter. Allows you to connects a PC without serial port to a serial device.
eBay
VIKEFON Micro USB Female to Type C/Type C Female to Micro USB/Type Female to Mini USB/Micro USB Female to Mini USB Plug Adapter
Aliexpress UK
StarTech 1ft (30cm) USB to Null Modem Serial Adapter Cable COM Retention FTDI USB-A to DB9 RS232 Interchangeable DB9 Nuts/Screws Windows/macOS/Linux. StarTech 1ft (30cm) USB to Null Modem Serial Adapter Cable COM Retention FTDI USB-A to DB9 RS232 Interchangeable DB9 Nuts/Screws Windows/macOS/Linux Black 0.3 m USB Type-A DB-9 Male Female.
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USB3.0 A Male & A Female to B Female Printer Print Converter Adapter Connector USB 3.0 Port Retail wholesale USB 2.0 Adapter
Aliexpress UK
Convert a USB port into 16 RS232 serial ports in an industrial rack-mountable chassis - and daisy chain multiple hubs for a scalable solution. Here's an easy and cost-efficient way to add RS232 serial capability to your industrial setting.
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Newest USB 2.0 to RS232 Serial Converter 9 Pin Adapter Serial PL2303 DB9 Plug Adapter Computer Converter for Win7/8
Aliexpress UK
DIY Flat Belt Screw Leather Craft Chicago Nail Brass Solid Rivets Stud Head I. 10PCS Stainless Steel Open-End Sheath Eyelet Rivet Parts Set for Kydex Holsters. New Mice Mouse Stickers Feet Skates Pads Cable Line Wire For Logitech G500 G500s.
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1 To 2 USB-C To USB-C USB-A Adapter 100W USB-C Male To USB-C USB-A Female Adapter 20Gbps 8K 60HZ U-shaped for STEAM DECK/Switch
Aliexpress UK