I have one of those; works fine with apcupsd via USB.

But forget about the RS232, it will give you only basic power failure
signalling, no statistics/diagnostics or controlled shutdown.

(It is rumored that older models were different at this.)

Sorry for the brief answer, I'm in a hurry, gotta go now.

Regards,
Tom


Gilles Gravier wrote:
> OK... I'm going to try with a BK650EI (CS series) from APC...
> 
> ( http://www.apc.com/resource/include/techspec_index.cfm?base_sku=BK650EI )
> 
> It's got USB and RS232 cables, so the RS232 drivers should work direct.