Word Processor Modem Interface PCA
Printed circuit assembly interfacing 300-baud modems for file transfer in 8472.90.50 word processing machines. Classified HTS 8473.40.21.00 as dedicated comms part. Supports Hayes-compatible protocols for early networks.
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Import Tips & Compliance
• Certify baud rates and AT command sets for word processor use
• Declare as internal card, not external modem
• FCC compliance docs required for radio components if any
Related Products under HTS 8473.40.21.00
Word Processing Floppy Disk Controller Board
Printed circuit assembly controlling 5.25-inch floppy disk drives in legacy word processing machines under 8472.90.50. It handles data read/write for document storage, classified in HTS 8473.40.21.00 due to its principal suitability for those specific machines. Essential for non-volatile storage in pre-hard drive era word processors.
Word Processing Printer Interface Assembly
Printed circuit assembly for connecting and controlling dot-matrix printers in 8472.90.50 word processing machines. It manages parallel port protocols for high-speed text printing, under HTS 8473.40.21.00 as a dedicated part. Optimized for continuous form paper handling in office environments.
Word Processing Power Management Board
Printed circuit assembly regulating DC power distribution within 8472.90.50 word processing machines, including voltage regulation for logic circuits. Classified in HTS 8473.40.21.00 for sole use with those machines. Prevents overheating in continuous text processing operations.
Word Processing Machine Audio Output PCA
Printed circuit assembly for beep tones and voice synthesis in 8472.90.50 word processing machines, alerting on errors or status. Classified HTS 8473.40.21.00 for principal use in those dedicated devices. Used in models with integrated speech for proofreading.
Word Processor Expansion Bus Interface Board
Printed circuit assembly providing proprietary bus slots for peripherals in 8472.90.50 word processing machines. Enables add-ons like modems, under HTS 8473.40.21.00 as a core part. Supports NuBus or similar legacy architectures.
Word Processing Display Driver Assembly
Printed circuit assembly driving monochrome CRT displays in 8472.90.50 word processing machines, optimized for 80-column text. HTS 8473.40.21.00 due to exclusive suitability. Handles character generator ROM for fixed fonts.