Unlike Fibre Channel, SCSI, FireWire and eSATA RAID storage, the CalDigit HDPro features a direct connection to the PCI Express bus, utilizing the computers bridge chip and memory system, combined with extremely high link speeds. This direct link eliminates latency introduced by the conversion of other interfaces to PCI Express, and provides superior bandwidth, availability and deployment flexibility as opposed to earlier-generation SCSI and Fibre Channel technology.

PCI Express provides error correction, and adapts to the speed of the PCIe slot automatically. The CalDigit HDPro works with both PCIe 4 lane or 8 lane. And because PCIe has speeds of up to 250MB/s per lane, bandwidth for ultra fast data transport between the storage system and the host computer can be achieved. These speeds are roughly 5 times faster that traditional fibre solutions. The HDPro comes with a high quality Molex* PCI Express cable and special electronics, to ensure a stable and high quality connection. This means both incredible speeds and reliable bandwidth for high-speed data transfers.