Disclosed herein is a carrier for removeably interconnecting a memory storage device having a SCSI ID and a controller ID with an equipment frame. The carrier holds the memory storage device. The carrier removeably attaches to the equipment frame to facilitate hot swappability of the memory...http://www.google.com/patents/US5784644?utm_source=gb-gplus-sharePatent US5784644 - Carrier for connecting device using electrical display device for indicating SCSI ID and controller ID of the attached device on the carriers facial assembly 
