Description
Magitronic A-B232 Mini 2S1P 8-Bit ISA I/O Card 2 Serial 1 Parallel w/ Manual
The Magitronic A-B232 is a Mini 2S1P 8-bit ISA multiport I/O card that adds two serial (COM) ports and one parallel (LPT) printer port to a PC via a single half-length ISA slot. Designed for the 8-bit ISA bus, it is fully compatible with IBM XT, AT, and 286/386/486 systems equipped with 8-bit ISA slots. This card is not plug-and-play — port addresses and IRQs are set manually via onboard jumpers to avoid conflicts with other peripherals.
Specifications & What's Included
- Manufacturer: Magitronic
- Model / MPN: A-B232
- Bus Interface: 8-bit ISA
- Port configuration: 2S1P — 2 serial ports (COM) + 1 parallel port (LPT)
- Form factor: half-length ISA card
- Serial interface chip: Motorola MC1489 UART line receiver (visible on PCB)
- Board marking: COMA-BLPT / MINI 2S1P (printed on PCB)
- Connectors: DB25 parallel port on bracket; serial ports via included ribbon cable with DB9/DB25 connectors
- Configuration: jumper-selectable IRQ and I/O address — not plug-and-play
- Country of manufacture: Taiwan, R.O.C.
- Compatible systems: IBM XT (8088), AT (286), and 386/486 PCs with 8-bit ISA slots
- Includes: original Magitronic retail box, B232 Mini 2S1P User's Manual, ribbon/breakout cable, and slot bracket
Applications
8-bit ISA multiport I/O cards like the A-B232 were a standard expansion solution for DOS-era PCs from the mid-1980s through the early 1990s. Systems based on the 8088, 8086, and early 286 processors often shipped with limited built-in I/O — commonly only one serial port and one parallel port — making a card like this necessary for connecting additional peripherals such as serial mice, external modems, plotters, or dot-matrix and daisy-wheel printers simultaneously. The 8-bit ISA bus (also called the PC/XT bus) was introduced with the original IBM PC in 1981 and remained standard through the XT and into the AT era, with the 16-bit AT bus maintaining backward compatibility so 8-bit cards could also seat in 16-bit ISA slots. Today, these cards are sought by vintage computer enthusiasts, restorers of classic IBM-compatible machines, and operators of legacy industrial or scientific equipment that still runs DOS on period-correct hardware. New-old-stock examples in original packaging are particularly valued since the components remain fresh and the jumper headers have never been bent or reconfigured.
This Magitronic A-B232 Mini 2S1P 8-Bit ISA I/O Card is new and unused, still in its original retail box. These cards came from a computer store that closed approximately 30 years ago and have been in storage since — never installed or used. The card, original user's manual, cable, and bracket all appear to be present and in excellent condition consistent with long-term boxed storage. Please view our photo set and contact us if you have any questions. Please note: We have multiple units in stock — yours may not be the one shown in the photos, however, it will be similar in condition and function.
Warranty Information
Additional Information
Brand: |
Magitronic |
Model: |
A-B232 |
MPN: |
A-B232 |
Type: |
8-Bit ISA Serial/Parallel I/O Card |
SKU: |
28935 |
Bus Interface: |
8-Bit ISA |
Number of Serial Ports: |
2 |
Number of Parallel Ports: |
1 |
Port Configuration: |
2S1P (2 Serial, 1 Parallel) |
Form Factor: |
Half-Length ISA Card |
Controller Chip: |
Motorola MC1489 (UART line receiver) |
Plug and Play: |
No — requires manual jumper configuration |
Compatible With: |
IBM XT, AT, 286, 386, 486 with 8-bit ISA slots |
Connector Type: |
DB25 parallel, DB9/DB25 serial (via cable) |
Country/Region of Manufacture: |
Taiwan (made in Taiwan, R.O.C.) |
Condition: |
New – Old Stock, New in Original Box |
Seller Notes: |
Includes original box, user's manual, cable, and bracket |
Condition Notes: |
Magitronic A-B232 Mini 2S1P 8-Bit ISA I/O Card. New in original box from a computer store that closed ~30 years ago. Never installed or used. Includes manual, cable, and bracket. |
