Configured with an RS-232 serial interface for desktop deployment, the Zebra 01991-100 is a direct thermal ticket printer that prints monochrome output at 203 dpi and up to 5.91 in/s across a maximum print width of 3.25 inches. Variable ticket formats run up to 3.25 inches wide and 23.6 inches long, covering ATB1 boarding passes and IATA CUSS bag tags up to 21 inches in length, while an automatic media detector enables loading without manual adjustment. The printer accepts fanfold and continuous label stock up to 9.84 mil thick on rolls to 9.84 inches in diameter. Both serial and USB interfaces are supported. At 2.6 inches tall, 4.1 inches wide and 7.1 inches deep, the chassis suits attended desktop ticketing environments and PC-based platforms.