Keyspan USA-19 - Manual (Page 26)

Once Internet Connect is open, select the Keyspan serial port from the Configuration menu.
Select an access number in Telephone Number menu and enter your account's password if
necessary. Click the Connect button to connect to the Internet.
Keyspan:USB Serial Adapter for Mac OS X-v2.x User Manual
This User Manual applies to the Keyspan USB Serial Adapter Software for Mac OS X.
Rev 05jul15 Page 26