Barcode printers usually connect to a computer or other devices through wired or wireless connections, such as USB, Ethernet, or wireless networks. They are compatible with various barcode symbologies, including UPC, EAN, Code 39, QR codes, and more. Some barcode printers may also support additional features like colour printing, label cutting, or integration with barcode design software. choosing a barcode printer, consider factors such as printing speed, print quality, connectivity options, compatibility with label sizes and materials, and overall durability based on your specific requirements and application needs.