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An optional on-board dual-channel SCSI daughtercard is available, providing the fastest pipeline directly into the Altitude hardware. The modular nature of this daughtercard opens up the possibility of future modules to support new storage connectivity standards. For those wishing to use a different type of controller or networked storage, VelocityHD also provides the flexibility of using separate system storage controllers over the host system bus. Of course, the high-definition world is evolving dynamically, and VelocityHD is designed with the future in mind, with exceptional expansion capabilities. Key to this future-proofing is the Leitch Across-Card Edge eXpansion.