SX Pro - serial adapter - 4 ports

Do you need serial ports for your PCI based Macintosh computer? The Keyspan SX Pro Serial Card is a simple, inexpensive, and reliable way to add four serial ports to your Macintosh computer. The Keyspan SX Pro Serial Card is a serial communications card for use with Mac OS-based personal computers which utilize the PCI local bus. Once you install the card in your Mac's PCI slot, you will have access to four serial ports that support asynchronous or clocked asynchronous RS-422/RS-232 communications at data rates up to 1Mbit/sec. Unlike port sharing and application juggling solutions, ports on a Keyspan SX Pro Serial Card provide reliable, simultaneous use of multiple serial devices.