Keyspan RS232 to USB-A Adapter, DB9, 3-ft Cable | Eaton
USB to RS232 Converter - 6ft - CAB-11304 - SparkFun Electronics
StarTech.com USB to Null Modem RS232 DB9 Serial DCE Adapter Cable with FTDI - ICUSB232FTN - Serial Adapters - CDW.com
Insignia™ 1.3' USB-to-RS-232 (DB9) PDA/Serial Adapter Cable, with Prolific Chipset Black NS-PU99501 - Best Buy
StarTech USB to RS232 Serial DB9 Adapter Cable ICUSB232PRO B&H
USB 2.0 RS-232 Serial Adapter with LED Indicators
USB : USB to RS232 Serial DB9 Male Cable Adapter FTDI Chipset 10 Feet RPC- USB-RS232-3M by www.valley-ent.com
RS232 to USB Adapter - ATC-810 – Grid Connect
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4 Port Professional RS-232 USB 2.0 to Serial Adapter
Prolific Usb Serial 9 Pin Db9 Rs232 Adapter Cable - Usb Rs232 Port Db9 Pin Cable - Aliexpress
HDMI® HDBaseT + USB-B to A and RS232 Over Cat Extender Single Gang Wall Plate Transmitter to Box Receiver - 4K 60Hz | HDBaseT Extenders | HDBaseT | Audio Video
USB to RS232 Serial over Cat5 Extender Kit(FTDI CHIP)
Amazon.com: CableCreation USB to RS232 Adapter with PL2303 Chipset, 6.6ft USB 2.0 Male to RS232 Female DB9 Serial Converter Cable for Cashier Register, Modem, Scanner, Digital Cameras, CNC,Black : Electronics
Amazon.com: StarTech.com 1 ft. USB to RS232 Serial DB9 Adapter Cable with COM Port Retention - Up to 920 kpbs USB A to DB9 Serial Adapter (ICUSB232PRO) : Electronics
C2G 1.5ft USB to Serial Cable - USB to DB9 Serial RS232 Cable - M/M - 26886 - USB Adapters - CDW.com