These ports run at very slow speeds. 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. Enhanced Capabilities Port. ECP ports use a DMA channel, but generally provide only a slight increase in speed.
Some printer drivers can cause communication problems.
If you have an application that monitors the status of a printer, it may load in the startup group. This can be removed from the startup group if necessary to prevent problems. This will cause very slow performance. This will usually need to be done in the computer's CMOS or BIOS setup. Inc. All rights reserved .