What is the differance between active and passive terminators. Also, what does passthrough mean? Some come with led lites. What are these for? I need to terminate my scanner which has both a 25 pin plug and a 50 pin cetronics plug. I have the scanner plugged into the scsi card with the 50 pin which leaves me with the 25 pin plug to terminate or should i get an adapter to change the 25 to 50 pins. This is the only device i will use extrenally but have a cd-r hooked internally.The card is a Advansys 940 Ultra. Thanks for all the help!!! Rick Fogel PCBUILD: http://nospin.com or [log in to unmask]