It adopts one-time filling and injection molding, Which is firm and beautiful. A USB A-type interface for easy connection to a PC, 2.0 standard, Full speed, High speed, Backward compatible. A printer IEEE1284 standard DB25 parallel port interface is convenient to connect the corresponding equipment, Rust-proof, Corrosion-resistant, Giving a golden and noble vision, IEEE1284 standard, Focusing on print quality, Transmission speed reaches 12 Mbps.