Label Printer
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Card labels
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Using USB on Linux
Linux's built-in printer driver (usblp) takes the printer as soon as it's plugged in, so the browser can't open it.
This rule frees the PM260 only (other USB printers keep working) and lets your user open it:
sudo tee /etc/udev/rules.d/60-pm260.rules <<'EOF'
SUBSYSTEM=="usb", ATTRS{idVendor}=="5958", ATTRS{idProduct}=="0150", MODE="0660", TAG+="uaccess"
ACTION=="bind", SUBSYSTEM=="usb", DRIVER=="usblp", ATTRS{idVendor}=="5958", ATTRS{idProduct}=="0150", RUN+="/bin/sh -c 'echo -n %k > /sys/bus/usb/drivers/usblp/unbind'"
EOF
sudo udevadm control --reloadThen unplug the printer and plug it back in. Bluetooth needs none of this.