Computer cables; Computer expansion boards; Downloadable computer software for controlling the operation of audio and video devices; Electrical relays and transformers; Network cards; Programmable logic controller (PLC); RAID (redundant array of independent disks) controllers; Semiconductor chips; Telecommunications equipment, namely, fiber-optic transceivers, fiber optic repeaters, converters and optimizers, wave division multiplexers, free-space optics transmission systems, switches includi...