Armored matrix
From Halopedia, the Halo wiki
An Armored Matrix is a form of storage devices that the UNSC uses for the storage and transportation of Artificial Intelligence constructs. The Armored matrix is used when there is a lack of Holotank technology, such as on the battlefield. The Martix is reinforced to make it hard to destroy. Though the AI contained in it can communicate verbally, there is no holo emitter for it to manifest a body; hence, the AI can talk, but it cannot see.
The Class C Military AIs of the ODST Command Human Entry Vehicles are carried in Armored Matricies so that they may ride to a combat zone intact and be further operated when a Firebase or other operational command post is put into place.
