The object is an HP 12966A buffered asynchronous data communications interface consisting of a large, square PCB board with a connector at one end to plug into a smaller board. The small object is packaged with the large object. Found with the board was an installation and reference manual, which was sent to Archives.
Manufacturer
Hewlett Packard
Place Manufactured
USA
Identifying Numbers
Other number
12966-60013 3
Stamped on a white sticker attached to the component side of the large PCB
Other number
52-2435
Printed on a white sticker attached to the component side of the large PCB
Other number
B-2424 423783
Stamped on a white sticker attached to the component side of the large PCB
Other number
hp 667609
Embossed in gold on the component side of the large PCB