Eaton Tripp Lite Series USB to Null Modem Serial FTDI Adapter Cable
Best adapter for connecting legacy serial equipment to modern computers.
Connect legacy serial devices to modern computers with the Eaton Tripp Lite Series USB to Null Modem Serial FTDI Adapter Cable. This 18-inch cable features a USB-A connector on one end and a DB9 male/female null modem connector on the other, allowing direct connection to RS-232 serial equipment. It supports data transfer speeds up to 226 Kbps and integrates an FTDI chipset for reliable performance and COM retention, ensuring consistent port assignment. The cable is bus-powered, requiring no external power source, and its compact design makes it ideal for portability. Premium shielding protects against interference, ensuring error-free data transmission across Windows, Mac, and Linux operating systems.
$32.99
Owner Satisfaction
4.3
/ 5
Category Rank
418
/ 769
#418 in USB Adapters
Price vs Category Average
-41%
Below average
Connector Type
9
/ USB-A to DB M/F Null Modem
Who it's for
- IT professionals requiring rock-solid driver stability and OS compatibility
- Engineers maintaining legacy hardware without expensive system upgrades
- Technicians needing direct device-to-device serial communication
Who should skip it
- General consumers looking for standard USB connectivity
- Users working on restricted systems without administrative installation rights
- Data managers requiring high-speed transfer rates for large files
Performance breakdown
Driver Reliability
The industry-standard FTDI chipset ensures rock-solid stability across all major platforms.
Port Consistency
COM retention features prevent frustrating port reassignment issues during frequent disconnects.
Signal Integrity
Premium foil and braid shielding effectively blocks interference for clean data transmission.
Portability
The compact 18-inch form factor is perfect for mobile troubleshooting kits.
Build Durability
Nickel-plated connectors and gold-plated contacts provide a robust, long-lasting physical connection.
Ease of Setup
Bus-powered design eliminates the need for bulky external power adapters.
Key Specs
Connector Type
USB-A to DB9 M/F Null Modem
Data Transfer Speed
Up to 226 Kbps
Cable Length
18 inches (45.72 cm)
Chipset
FTDI FT232RL
Operating Systems
Windows, Mac, Linux
Power Source
Bus Powered
Shielding
Foil and braid shielding for EMI/RFI noise reduction
Connectors
Molded nickel-plated connectors with gold-plated contacts
Know before you buy
No, the cable is bus-powered, meaning it draws all necessary electricity directly from your computer's USB port. You do not need an external power adapter.
Yes, the integrated FTDI chipset supports COM retention. This ensures that your computer consistently assigns the same port to the device, even after disconnecting and reconnecting it.
The adapter is widely compatible and supports Windows, Mac, and Linux operating systems, making it a versatile choice for various computing environments.
This cable supports data transfer speeds of up to 226 Kbps, which is sufficient for most standard RS-232 serial communication tasks.
Yes, the DB9 end is designed as a male/female null modem connector, providing flexibility to connect to different types of serial equipment without needing extra gender changers.
The cable features premium foil and braid shielding designed to block EMI and RFI line noise. This protection helps prevent signal interference, ensuring your data transmission remains error-free.
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