Arnaud Quette wrote: >> So the questions are: >> 1: is the USB cable simply like the RS232 cable but with built-in USB >> converter ? >> 2: or is the com-port some sort of "autodetecting" system that can >> work in both a USB and a RS232 config ? In that case, would anyone >> know the USB pin layout of the socket on this thing ? >> 3: has anyone else used this or a similar MGE system on the mac? >> 4: Does anyone know a cheap address for one of these USB cables in >> the Netherlands, or at least Europe? > > the newer models you're talking about are the USBS models, which allow > to switch between USB or serial by just changing the cable. If you own > such a model, you should have an RJ12 connector on the UPS side, and 2 > cables, one ending with a DB9 (for serial use) and another with a > standard USB connector.
The OP doesn't have the USB cable, that's why he came here in the first place. > Otherwise, the keyspan solution mentioned by my fellows are just fine > and have been validated. Using the serial port has a slight disadvantage over the USB port. The SHUT protocol takes (especially during startup) a fair amount of time because a lot of data has to be sent over a slow link. On my Evolution 650, it takes almost 10 seconds just to transfer the report descriptor. After that, the differences are small however, so operationally this should not be a problem. > I hope this answers your question, I think the OP would still like to know if it is possible to either buy or make such a cable (questions 2 and 4). Best regards, Arjen _______________________________________________ Nut-upsuser mailing list [email protected] http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser
