About: http://webisa.webdatacommons.org/115208397

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Such add-on units may connect through a standard serial port, a universal serial port (USB), a parallel port, such as the port typically used for printers, and so on.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com