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The CET consisted of the non-English-specialized "Band 4" (CET4), in which certificate-holders have reached the English level of non-English major undergraduate students, and "Band 6" (CET6), in which the certificate-holders have reached the English level of non-English major postgraduates. The test included listening, reading and writing sections.
Universal Serial Bus 4 (USB4), sometimes erroneously referred to as USB 4.0, is the most recent technical specification of the USB (Universal Serial Bus) data communication standard. The USB Implementers Forum originally announced USB4 in 2019.