Memory Block

A Covenant Memory Block is a form of storage for Covenant information, similar to the UNSC's own Data Crystal Chips. The block consists of a brick shaped-chunk of a superdense material unknown to humans. Its capacity is apparently unknown also, but it is likely to be prodigious.

Though Humans do not fully understand the technology, they are still capable of retrieving the data from Memory Blocks, or at least their AI constructs can.