Module is a 1U tile in Pulp Logic format
No info about availability.
Diode OR 1U Tile 3 input passive diode OR circuit.
This is a passive Or gate function built from diodes and resistors.
http://pulplogic.com/product/diode-or/
These merchants probably sell this module. Huh?
Included in 226 Racks, 120 are public: