Tripp Lite U209-18N-NULL serial cable Black 15.7" (0.4 m) USB Type-A DB-9

Converts USB Port into RS-232 Null Modem Serial Port
Solves DCE/DTE conflicts without additional cross-wired serial cables or adapters
Supports data transfer speeds up to 256 Kbps—twice as fast as a built-in serial port
No external power source required
Portable 18 in. design fits perfectly into laptop bag
COM retention for automatic reassigning of COM values to ports in case of disconnection or reboot
Integrated FTDI FT232RL chipset

First-Rate Construction for Superior Signal Transfer
Premium foil and braid shielding for EMI/RFI noise protection
Molded nickel-plated connectors with gold-plated contacts for optimal signal quality
Integral strain relief for long life
Flexible PVC jacket easy to install in tight spaces

Broad Compatibility
Compatible with Windows, Mac and Linux operating systems