SPP 0 Sequenced Packet Protocol Protocolo de Paquetes Secuenciales 2000-02-08 Sequenced Packet ProtocolSPP 1 Standard Parallel Port Puerto Paralelo Estándard 2004-03-31 Standard Parallel PortSPP 2 Scalable Parallel Processor Procesador Paralelo Ampliable 2008-12-06 3 Serial Port Profile Perfil de Puerto Serie 2019-05-16 Serial Port ProfileSPP