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The Best null modem cable usb of 2025 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best null modem cable usb of 2025. Check our ranking below.

2,081 Reviews Scanned

SaleRank No. #1
StarTech.com 6ft (1.8m) 1-Port USB to Serial RS232 Adapter, FTDI DB9 Serial DCE Adapter Cable, Null Modem, USB 2.0 - TAA
  • MAXIMIZED PORTABILITY: This USB to serial RS232 adapter with FTDI features a single cable design removing the need for additional adapters and cables
  • CORRECT DTE/DCE CONFLICTS: Convert your available USB port into a null modem RS232 DB9 serial port, resolving any DTE/DCE conflicts
  • BROAD COMPATIBILITY: Compatible with your USB 1.0 or 2.0 ports, this RS232 converter works with your Windows, Mac or Linux systems
  • FAST TRANSFER SPEEDS: Experience fast speeds with this serial adapter, supporting a Baud Rate up to 921.6Kbps
  • TECH SPECS: 6 feet (1.8 meters); FTDI FT232RL Chipset; Max Baud Rate: 921.6 Kbps; 256 Bytes FIFO; None/Odd/Even/Mark/Space Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits; TAA Compliant
Rank No. #2
USB to RS-232 DB9 Female 9 Pin Null Modem Rollover Serial Adapter Cable for Windows,Linux MAC OS (Null Modem)
  • USB to RS-232 DB9 female 9 Pin null modem rollover serial adapter cable
  • Length:6ft /Chip: CP2102.
  • The USA quality chip ensures stable transmission of signals
  • If you have any problems within 180 days, please contact us.
Rank No. #3
GXMRHWY USB 2.0 Male to USB 2.0 Male with FT232R Chipset Null Modem Cable for PC to PC Data Transfering Communication 2.5Meter
  • USB to USB Null Modem Cable , USB2.0 Standard, Full Speed, USB NMC-2.5M,TTL-232R-5V, Compliant with FCC/CE, RoHS Certification
  • Data transfer rate from 300 baud to 3M baud at TTL level;Lower poerating(20mA) and USB suspend mode current(70uA)
  • Support FT232R Chip-IDTM,with each cable end programmed with a unique USB serial number;Support USB suspend and resume
  • Compatible UHCI / OHCI / EHCI host controller ; FT230X USB TTL null modem cable;TTL 3.3v converter on both sides.
  • We make TX to connect RX, Rx to connect TX for receiving/sending datas to each other.TX-RX, RX-TX, CTS-RTS,RTS-CTS, GND-GND.
Rank No. #4
OIKWAN USB to RS232, USB Serial Adapter with FTDI Chipset,USB 2.0 to Male DB9 Serial Cable for Windows 11,10, 8, 7, Vista, XP, 2000, Linux and Mac OS(6ft)…
  • !!Please NOTE: this is MALE RS232 to DB9 SERIAL CABLE ,Not VGA!!!It is 9 pin, NOT 15 pin!! Look carefully of the Pin is match with your device. Before ordering , please confirm the interface gender is waht you need. After receiving ,please read user manual /instruction at first and download the Driver at first from FT232 Official website or Cisco website . Customer service always online.
  • Wide range of applications: USB to RS232 DB9 male serial adapter can work with your Windows (10 / 8.1 / 8 / 7 / Vista / XP), MAC or Linux system and other platforms. USB adapter is designed to connect to serial devices, such as serial modem with DB9, ISDN terminal adapter, digital camera, label writer, palm computer, barcode scanner, PDA, cash register, CNC, PLC controller, tax printer, POS, bar code scanner, label printer, etc
  • High quality: ftdi usb serial,the latest ftdi chip set ensures more reliable and faster operation. USB 2.0 to RS232 male DB9 console cable will support 1Mbps date transfer rate.
  • Most convenient: rs232 to usb simple installation, plug and play, COM port creation, baud rate can be changed to the required settings. USB power supply - no external power supply required.
  • Exquisite design: usb-to-serial,Gold Plated USB RS232 connector and PVC cable ensure high performance and extra durability. Powered by USB port, this USB to DB9 series RS232 adapter cable is designed to fit easily into your handbag.
SaleRank No. #5
StarTech.com 3ft (1m) USB to Null Modem Serial Adapter Cable, COM Retention, FTDI, USB-A to RS232, Changeable DB9 Screws/Nuts
  • INTERCHANGEABLE NUTS & SCREWS: Secure the adapter to a serial device using the pre-installed DB9 screws, or install the included DB9 Nuts for compatibility with serial peripheral devices/cables; Add a null modem RS232 port to a computer using a USB-A port
  • LED INDICATORS: Transmit and Receive LED indicators offer real-time monitoring of port activity, while the USB LED indicates when the adapter is successfully recognized by the desktop or laptop
  • COMPATIBILITY: Works with Windows, macOS, ChromeOS, and Linux; Drivers auto-install in Windows 7+, macOS 10.15+, and Linux; COM retention enables the COM port to automatically re-assign; Resolve DCE/DTE conflicts without using cross-wired cables/adapters
  • BUILD QUALITY: Solid one-piece molded TPE housing and Level-4 ESD protection (15kV air/8kV contact) enhance reliability and longevity; Copper shielding minimizes EMI/RFI interference; Gold-plated connectors; Extended operating temperature of -40°C to 80°C
  • TECH SPECS: 3.3ft (1m) Cable Length; FTDI FT232R Chipset; Max Baud Rate: 921.6Kbps; 128 Byte RX and 256 Byte TX FIFO; Odd/Even/Mark/Space/None Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits

Last update on 2025-12-11 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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