Zebra ZD421-HC

BLUETOOTH	Supported
MEDIA WIDTH	108 mm 112 mm 118 mm
MEMORY	256MB RAM 512MB ROM
PRINT MODE	direct thermal thermal transfer
PRINT WIDTH	104 mm 108 mm
RESOLUTION	12 dots/mm (300 dpi) 8 dots/mm (203 dpi)
ROLL DIAMETER	127mm
SPEED	102 mm/s 152 mm/s 152 mm/sec. (203 dpi) or 102 mm/sec. (300 dpi) 152 mm/sec. (203 dpi) or 102 mm/sec. (300 dpi)3 operating buttons
SYSTEM INTERFACE	Ethernet USB
WIFI	Supported

Zebra PS20

BLUETOOTH	Supported
MEDIA WIDTH	108 mm 112 mm 118 mm
MEMORY	256MB RAM 512MB ROM
PRINT MODE	direct thermal thermal transfer
PRINT WIDTH	104 mm 108 mm
RESOLUTION	12 dots/mm (300 dpi) 8 dots/mm (203 dpi)
ROLL DIAMETER	127mm
SPEED	102 mm/s 152 mm/s 152 mm/sec. (203 dpi) or 102 mm/sec. (300 dpi) 152 mm/sec. (203 dpi) or 102 mm/sec. (300 dpi)3 operating buttons
SYSTEM INTERFACE	Ethernet USB
WIFI	Supported