Fast EtherHub 3500 System User’s Guide
Glossary 5
Station Port (MDI-X)
MDI-X ports which are used for connecting the hub to any workstation or server that has a properly
installed network adapter card. (For port 12, the selector switch must be set to
MDI-X.)
STP (Shielded Twisted-Pair)
100W Category 5 twisted-pair wire covered with an external aluminum-foil or woven-copper shield
designed to reduce excessive noise pick up or radiation. The STP cable refered to in this manual is
also sometimes called screened twisted-pair (ScTP). Its impedance is 100Wand has the same pin
assignment as UTP. This cable should not be confused with the older 150Wcable type designed by
IBM.
UTP (Unshielded Twisted-Pair)
Cable composed of insulated wires twisted together to reduce electrical interference.
Xmodem
A protocol used to transfer files between devices. Data is grouped in 128-bytes blocks and error-
corrected.