Industrial chassis and card cages are metal frames that support and contain electronic components and power supplies. They generally have a backplane with slots to install other peripherals and accessories.
PCI Express products (PCIe products) use a computer protocol and interface format which communicates more quickly than peripheral component interconnect (PCI), a standard which PCIe is designed to replace.
RAID products include component within a RAID system, such as RAID controllers and RAID disk arrays. RAID is an acronym for redundant array of independent (or inexpensive) disks.