Noun
backplane (plural backplanes)
(electronics) A circuit board that connects several connectors in parallel to each other, so that each pin of each connector is linked to the same relative pin of all the other connectors, forming a computer bus.
A backplane does not suffer from this problem, so its service life is limited only by the longevity of its connectors. Source: Internet
A backplane is generally differentiated from a motherboard by the lack of on-board processing and storage elements. Source: Internet
A backplane uses plug-in cards for storage and processing. Source: Internet
At the "back" of each card is one or more connectors, which plug into mating connectors on a backplane that closes the rear of the subrack. Source: Internet
A configuration with 8x 2.5-inch drives with AnyRAID support can be upgraded to 16 drive bays by adding one additional backplane. Source: Internet
Backplanes for SAS and SATA HDDs most commonly use the SGPIO protocol as means of communication between the host adapter and the backplane. Source: Internet