8473.30 - Parts and accessories of the machines of heading 8471:

This HTS category, 8473.30, encompasses a broad range of parts and accessories specifically designed for use with machines classified under heading 8471. Heading 8471 covers automatic data processing machines and units thereof, including computers, disk drives, and printers. Therefore, items classified here are components that contribute to the functionality, assembly, or maintenance of these electronic data processing systems. Examples include printed circuit boards, power supplies, cooling fans, memory modules, and connector assemblies intended for inclusion in or connection to machines of heading 8471.

It is crucial to distinguish this category from its siblings. While 8473.40 and 8473.50 cover parts and accessories for other types of machines (namely those in headings 8470 and 8472), 8473.30 is exclusively dedicated to components for automatic data processing machines. This distinction hinges on the primary function and intended application of the machine to which the part or accessory is to be fitted.

Within 8473.30, further subdivisions exist to refine classification based on specific characteristics. For instance, subcategories differentiate between parts that incorporate a cathode ray tube (CRT) and those that do not, reflecting technological shifts in display technology. The remaining "Other" category under 8473.30.91.00 serves as a residual catch-all for parts and accessories not specifically enumerated elsewhere within the subheadings, provided they meet the core criteria of being for machines of heading 8471.