The Hewlett-Packard 82161A digital cassette drive is an HP-IL tape drive that uses proprietary mini cassettes. Each cassette holds 128kB.
It was originally designed to be used with HP-41 calculators, but later HP-IL capable computers, such as the HP-75 and HP-71 can also use it.
Note that this unit needs a working battery pack to function, even if you connect it to power.
To prevent damage to the tape and to increase its lifespan, you should always rewind the tape before removing it from the drive or when powering-down the unit.
- HP 82161A Digital Cassette Drive Owner's Manual (PDF, 780kB)
- HP 82161A Digital Cassette Drive Service Manual (PDF, 1.8MB)