Echt wel, de eerste 3 hits zijn al raak, copy & paste:
Parallel port mode (SPP, EPP, ECP):
HP recommends using an EPP or ECP parallel port with the external CD-Writer Plus. Although most new computers have parallel ports which are capable of ECP/EPP modes, the default setting is SPP. In most cases, you will need to enter the computer's CMOS or BIOS setup program to make changes to these settings. Refer to you computer's documentation for information on how to set the port for EPP or ECP modes.
SPP:
Standard Parallel Ports are the slowest type. SPP ports can be called unidirectional, bidirectional, standard, compatible and other names. These ports run at very slow speeds.
EPP:
Enhanced Parallel Port. Similar in speed to ECP (below). EPP is usually the preferred setting since it does not use a DMA channel. This can be a great benefit on systems that have many devices installed.
ECP:
Enhanced Capabilities Port. ECP ports use a DMA channel, but generally provide only a slight increase in speed.