Comment 33 for bug 195782

First, note that there are also many 'usb-pid=0000' cases. These have to be considered as empty product IDs, too.

So with

egrep '^io-support|^usb-pid' /usr/share/hplip/data/models/models.dat | egrep -B1 '^usb-pid=(|0+)$' | grep io-support | grep [2367] | wc -l

there are 62 devices with USB port but without valid product ID. So verification of the model name in the device ID is still required (but only needed for the models without valid product ID.