1. 91cm USB standard cable USB interface support hot-swappable easy to use; 2. Using a standard parallel port DB25 female solutions stable quality reliable performance strong anti-interference performance good signal transmission effect. 3. Support various types of parallel DB25 female printers printing support bidirectional parallel interface standard; 4. USB powered no external power supply needed; 5. Transmission speeds up to 12 Mbps. 6. Support USB connect to scanner and printer easy connection; Supports bi-directional parallel print w/ standard DB25 female connector