keyspan high speed usb serial adapter Compare search results
$23
StarTech.com UCB C to Serial Adapter ~ USB C to RS232 Cable ~ USB C to DB9 Cable
Sabrent 6 USB 2.0 to 9~pin DB~9 RS~232 Serial Adapter Cable~ Black | Quill
Gearmo USB Serial Adapter FTDI Chip RS232 DB~9 920K w TX RX LED Windows 10 8
IOGEAR USB to Serial RS~232 Adapter Silver
Stemedu 2PCS USB to ESP8266 ESP~01 Wireless WiFi Adapter 5PCS ESP8266 ESP~01S
$22
USB to RS232 Serial Adapter 4 Pin Terminal Block TXD RXD GND VCC Pinout with FTD
IO Crest SI~MPE15062 Full Size Mini PCIe Card or USB 2.0 1 Port Serial DB9 RS232
DTECH USB to Serial Adapter Cable 16 ft DB9 Male RS232 Cord with FTDI Chip Suppo
StarTech ICUSB232DB25 USB To RS232 DB9 DB25 Serial Adapter Cable
Tripp Lite 5ft USB to Serial Adapter Cable USB~A to DB25 RS~232 M M 5
C2G USB to DB9 Serial Adapter Cable Blue
Tripp Lite 18in USB to Null Modem Serial Adapter Cable FTDI w COM Retention M F
Aten UC232A USB to PDA Serial DB9 Adapter w PC Mac Drivers