The 232CI optically isolates and protects the transmit and receive lines of your RS-232 port from ground loops and power surges up to 2500V RMS for one minute.
Add a parallel port to your laptop with Model SPP-100. This PCMCIA parallel port card plugs into a Type II PCMCIA socket and is PC-Card 2.1 compliant. It supports the Enhanced Parallel port (EPP) interface.