Our line of PCMCIA RS-232 Serial Cards can expand a laptop or handheld system's capabilities while taking up minimal system resources. This line of PCMCIA cards is one of the most complete and robust in the marketplace providing a variety of noteworthy features including serial cards with the industry's fastest data rates, a unique auto-toggle feature for automatic hardware control of RS-422/485 dataflow, deep 64-byte FIFOs, lightening fast and secure synchronous serial communication, detachable or rugged attached cable options, true EPP parallel port functionality, low power requirements, and an all encompassing driver set supporting Windows 9x and later, Windows CE, Linux and OS/2.