Connected usb device doesn't show in android

Hi Guys!
I can print text from android tablet to a pcl5 printer. I use the usb library for this, I can connect a printer by usb, and send pjl and pcl commands. All thing goes well.
But I have a new tablet on what I can't connect to the printer. Even more, I use a program, called USB device info. This program lists the connected usb devices in two separated columns: one column shows devices known by android, the other column shows devices known by kernel. Here is my question: my printer is...

Connected usb device doesn't show in android

from B4X Community - Android, iOS, desktop, server and IoT programming tools http://ift.tt/2aqXoZR
via IFTTT