In an optical connector for use in connecting an optical fiber, a shell member has an engaging portion. The housing includes a faceplate formed with a non-circular through-hole. Test results output by the scan chains are compared with one another on the chip, and majority voting is used to identify outlier test results that are indicative of a faulty processing core. A first content available over a network is retrieved. Since each of the LED chips of the first row LED lamp is staggered from that of the second row LED lamp and the first, second covers respectively include a plurality of first, second depressions which are configured for avoiding or preventing the first, second covers from stopping the travel of the light emitted from the second first row LED lamps.