The FTDI chip null modem cable is a modern replacement for the traditional serial null-modem cable. It allows a user to connect two PCs using their USB ports. The user can then perform file transfers between the PCs via the USB interface. This cable contains a small internal electronic circuit board, encapsulated into the USB connector at both ends of the cable. The electronic is based on the FTDI FT232R USB to serial UART IC and it handles all the USB signalling and protocols. This cable is a USB powered with 2.0 full speed compatible and 2.5m cable that supports data transfer rate up to 3Mbaud at TTL levels.

Based on back to back FTDI FT232RQ devices
Entire USB protocol handled by USB connector encapsulated electronics
Lower operating (20mA) and USB suspend mode current (70μA)
Operating temperature ranges between -40°C and 85° C
Support for USB suspend and resume
UHCI/OHCI/EHCI host controller compatible
USB 2.0 full speed compatible
USB Type A connector on both ends of cable

File transfer between PCs
Password protected file transfer between PCs
PC to PC networking using USB port

ANSI/ESD S20.20:2014
BS EN 61340-5-1:2007