NCR 497-0406188 Dual DB9 Serial ISA Expansion Card SPC21XX

Condition Used (Good condition. Genuine OEM NCR 2-port RS-232 serial ISA expansion controller card, Part Number 497-0406188, PCB Model SPC21XX (Copyright 1994). QC Stamp: QC OK 108/5. Powered by dual Winbond W86C551 16550 UART controller chips. Features a 16-bit ISA bus edge connector, two external DB9 male RS-232 serial ports, and onboard jumper blocks for COM address (3F8, 2F8, 3E8, 2E8, 278, 378) and IRQ selection. Attached with a full-height bracket. Green circuit board, gold edge contacts, and mounting bracket are clean and intact with minor cosmetic surface wear from prior deployment. Manufactured in Taiwan. Sold AS-IS.)

ITEM SPECIFICS

• Brand / Manufacturer: NCR Corporation

• Part Number (P/N): 497-0406188 (497-0406188 / 4970406188)

• PCB Model: SPC21XX (SPC-21XX)

• UART Chipset: 2x Winbond W86C551 (16550 UART Compatible)

• Interface / Bus Type: 16-Bit ISA Expansion Interface

• External Ports: 2x DB9 Male RS-232 Serial Ports (COMA / COMB)

• Configurability: Onboard Jumpers for COM Port Address & IRQ Selection

• Form Factor: Full-Height 16-Bit ISA Card

• Color: Green PCB w/ Silver Bracket

• Country of Manufacture: Made in Taiwan

• Specific Device Compatibility:

  • Legacy Industrial PCs & Retro Hardware: Compatible with vintage 386, 486, Pentium, and industrial ISA-slot motherboard systems connecting legacy serial barcode scanners, touchscreens, receipt printers, scale modules, and CNC equipment.