[Nut-upsuser] Tripp Lite Internet Office 350VA

Charles Lepple clepple at gmail.com
Tue Dec 6 18:05:03 UTC 2005

On 12/6/05, Peter Selinger <selinger at mathstat.dal.ca> wrote:
> Could it be that this is really a HID device, and the driver simply
> hasn't implemented all the features?

I bet the descriptor just shows an 8-byte in/out buffer. (We could
probably fold some of tripplite_usb into newhidups, but it would be a
separate subdriver from the more intelligent Tripp Lite UPSes that
actually conform to PDC.)

Another reason why it might be closer to tripplite_usb is the "0x3A,
0x53, 0xAC, 0x0D" query, which translates into ":S" + cksum + CR. The
response looks similar to the OMNIVS series. It also shares the same

- Charles Lepple

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