Description
Burndy 107-103-3AM1 ISA Controller Card NEC D7201AC Serial I/O PCB
This is a Burndy 107-103-3AM1 ISA expansion card built around the NEC D7201AC serial communications controller. The card plugs into a standard ISA (Industry Standard Architecture) slot and provides serial I/O functionality via its DB25 female bracket connector. A Fox crystal oscillator and a DIP switch configuration bank are present on the component side, along with multiple supporting logic ICs. The PCB is marked revision B on the solder side.
Specifications & What's Included
- Manufacturer: Burndy
- Part Number: 107-103-3AM1
- Date Code: SD8833
- Main Controller IC: NEC D7201AC (Serial Communications Controller / USART)
- Bus Interface: ISA (Industry Standard Architecture) — half-length card
- Bracket Connector: DB25 female (parallel/serial port)
- Oscillator: Fox-branded crystal oscillator (frequency not legible at this resolution)
- Configuration: DIP switch bank on component side for I/O configuration
- PCB Revision: B (silkscreen on solder side)
- PCB Reference: Y403-034 (visible on solder side near connector)
- Included: Card only — no cables, brackets beyond the integral one, or accessories
Applications
ISA expansion cards of this type were used in IBM PC/XT/AT-compatible desktop computers and workstations from the mid-1980s through the mid-1990s, when the ISA bus was the dominant expansion interface for business and industrial PCs. The NEC D7201AC is a dual-channel serial communications controller (a USART variant) commonly used in serial I/O controller cards of that era to manage asynchronous and synchronous serial data transfer. Cards like this were used in data acquisition setups, industrial automation, and scientific instrumentation to interface a host PC with serial peripherals and instruments. ISA serial controller cards remain sought after today for maintaining legacy industrial systems, CNC machines, and laboratory equipment that still runs ISA-bus hardware. This card would be compatible with any ISA-equipped PC or industrial single-board computer accepting half-length ISA cards.
This Burndy 107-103-3AM1 ISA Controller Card has been inspected and appears to be in good used condition. The PCB is clean with no visible damage, cracked traces, or missing components. The DB25 bracket connector and ISA edge connector both appear intact and in good shape. Normal light handling wear is present on the card. No cables or accessories are included — card only. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Burndy |
Model: |
107-103-3AM1 |
MPN: |
107-103-3AM1 |
Type: |
ISA Controller Card |
SKU: |
40764 |
Main Controller Chip: |
NEC D7201AC |
Bus Interface: |
ISA (Industry Standard Architecture) |
Connector Type: |
DB25 Female (Parallel/Serial Port) |
Form Factor: |
Half-Length ISA Card |
PCB Revision: |
B (visible on PCB silkscreen) |
Date Code: |
SD8833 |
Condition: |
Used – Inspected |
Seller Notes: |
Card only. No cables or accessories included. |
Compatible With: |
ISA-bus desktop computers and workstations |
Country/Region of Manufacture: |
Japan (NEC D7201AC chipset) |
Condition Notes: |
Burndy 107-103-3AM1 ISA Controller Card. Inspected, good used condition. PCB clean, no visible damage. DB25 and ISA edge connectors intact. Card only, no cables included. |
