Zebra ZD421t, 12 dots/mm (300 dpi), USB, USB Host, BT (BLE), Ethernet
Zebra ZD621d, 8 dots/mm (203 dpi), linerless, RTC, USB, USB Host, RS232, BT, Ethernet, Wi-Fi, grey
Zebra ZD621R, 8 dots/mm (203 dpi), disp., RTC, RFID, USB, USB Host, RS232, BT (BLE), Ethernet, grey
Zebra ZD621d, 8 dots/mm (203 dpi), disp., RTC, USB, USB Host, RS232, BT, Ethernet, Wi-Fi, grey