Let me add that I am refering to the *early* 1900s.. version 5.x is the latest software for them and I still do not see a K option. There are newer 1900's that DO have the K option.
The following the "old" design..
WS-C1900, WS-C1900C, and WS-C1912
The others use the newer IOS type of software with both the menu and the command line interface.
WS-C1912-A, WS-C1912C-A, WS-C1924-A, WS-C1924C-A and WS-C1924F-A,WS-C1912-EN, WS-C1912C-EN, WS-C1924-EN, WS-C1924C-EN, WS-C1924F-EN and WS-C1924-EN-DC
Mike S
"Diplomacy; the art of saying 'nice doggie' till you can find a rock" Wynn Catlin