"A GENERAL PURPOSE MILITARIZED RADOM ACCESS DISK MEMORY DEVISE FOR PROCESSING,RECORDING AND READING DIGITAL DATA MIL-STD-1397 CATEGORY I TYPE B INPUT/OUTPUT CHANNELS;MODIFICATION AS TO INTERFACES,MEMORY CAPABILITY,CONTROL AND PROCESSING FUNCTIONS ARE AVAILABLE BY INSTALLATION OF PLUGGABLE MODIFICATION KITS FOR ADAPTATION INTO DIGITAL DEVICES,SUITES AND TACTICAL APPLICATIONS;IT IS 30.00 IN.LG;20.97 IN.HT."