Parts classification for optical network cards upheld where devices lacked standalone function and worked only in host equipment.

Imported transponder, muxponder and optical splitter cards used only in designated optical transport network equipment were treated as parts under CTI 8517 70 90, not as other apparatus under CTI 8517 62 90. Because the cards fitted into dedicated chassis slots, drew power and functionality only from the host system, had no independent or standalone use, and were not cross-compatible with other manufacturers' equipment, they satisfied the settled test for parts classification. The analogy to network interface cards was rejected, and Rule 2(a) and Section XVI Note 3 were held inapplicable on these facts. The resulting classification under Heading 8517 as populated printed circuit boards was maintained, and the contrary duty demand could not be sustained.

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Issues: Whether the imported transponder, muxponder and optical splitter cards were correctly classifiable under CTI 8517 70 90 as parts, or under CTI 8517 62 90 as other apparatus, and whether the duty demand founded on the contrary classification could be sustained.

Analysis: The cards were designed for use only in the specified optical transport network equipment, fitted into dedicated slots in a modular chassis, and derived power and functionality only when integrated with the main equipment. They did not have an independent or standalone function, were not cross-compatible with equipment of other manufacturers, and therefore satisfied the settled tests for classification as parts. The reasoning in the earlier decisions concerning similar cards and modular communication equipment was applied. The attempt to classify the cards as network interface cards was rejected because NICs connect a computer to a network, whereas these cards perform specialised functions only within the host equipment. Rule 2(a) on essential character and Note 3 to Section XVI were held inapplicable on the facts, and the cards being populated printed circuit boards were treated as parts of Heading 8517 under Section Note 2(b).

Conclusion: The subject cards were correctly classifiable as parts under CTI 8517 70 90 and not under CTI 8517 62 90; the impugned classification and consequent duty demand could not be sustained.

Ratio Decidendi: Cards that perform no separate independent function and operate only when integrated into dedicated slots of the main equipment are classifiable as parts rather than as independent apparatus under Heading 8517.

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