Description
Zenith Data Systems 85-3053-02 Parallel Serial Board 8-Bit ISA Card 112785
The Zenith Data Systems 85-3053-02 is an 8-bit ISA parallel/serial I/O expansion card designed for Zenith Data Systems ISA-bus personal computers. It adds parallel and serial port connectivity to compatible ZDS desktop systems via a DB-25 bracket connector, and is populated with standard 74-series TTL logic ICs typical of mid-1980s ISA I/O card design.
Specifications & What's Included
- Manufacturer: Zenith Data Systems
- Part Number: 85-3053-02
- Board Stamp: 112785 (November 1985)
- Bus Interface: 8-bit ISA
- Function: Parallel and Serial I/O expansion
- Bracket Connector: DB-25 female (parallel port)
- Form Factor: Half-length ISA expansion card
- Main Logic ICs: SN74ALS32N, 74LS74AN (TTL series)
- Country of Manufacture: Malaysia (per board label)
- Included: Card only — no cables or accessories
Applications
8-bit ISA parallel/serial I/O cards like the 85-3053-02 were standard expansion hardware in IBM PC/XT-compatible and proprietary ISA-bus desktop computers of the mid-1980s. Zenith Data Systems was a major supplier of IBM-compatible PCs to the U.S. government and commercial markets during this era, and produced a range of proprietary peripheral cards for their ZDS desktop lines. This card would have provided parallel printer port connectivity and serial communications capability — functions that in later designs were integrated onto the motherboard. Today these cards are sought by collectors and technicians maintaining vintage ZDS systems, or by hobbyists restoring period-correct ISA-bus machines. The 8-bit ISA bus standard dates this card firmly to the pre-AT/286 era of the mid-1980s.
This Zenith Data Systems 85-3053-02 Parallel/Serial ISA Board has been inspected and appears to be in good used condition. It was pulled from a working environment. The board shows normal age-related wear consistent with a vintage ISA card — the PCB and components look intact with no obvious physical damage visible. The DB-25 bracket and connector appear straight and undamaged. 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: |
Zenith Data Systems |
Model: |
85-3053-02 |
MPN: |
85-3053-02 |
Secondary Model: |
112785 |
SKU: |
13012 |
Type: |
Parallel/Serial I/O Expansion Card |
Bus Type: |
ISA (8-bit) |
Interface: |
Parallel and Serial |
Form Factor: |
Half-Length ISA Card |
Connector Type: |
DB-25 (female, parallel port) |
Compatible With: |
Zenith Data Systems ISA-bus PCs |
Chipset: |
SN74ALS32N, 74LS74AN (TTL logic ICs) |
Condition: |
Used – Pulled from Working Environment |
Country/Region of Manufacture: |
Malaysia (per board label) |
Seller Notes: |
Card only. No cables or accessories included. |
Condition Notes: |
Zenith Data Systems 85-3053-02 8-bit ISA Parallel/Serial Board inspected and in good used condition. Pulled from a working environment. Normal age-related wear. No visible damage. Please contact us with any questions. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |
