Keyspan USB Serial Adapter 2.1

Available in this download is the USB serial port adapter for your iMac. This allows your iMac to use serial port-based products. This version improves overall serial communications, fixes an issue with virtual memory, fixes an issue with multiple adapters on different USB buses having the same port names, and more.

Note: This new installer will delete any changes made to the Keyspan adapter's preference file. You should re-configure your serial devices and Keyspan adapter settings as necessary.