Description
Computone 3-01325 ATvantage H 8-Port RJ11 ISA Async Serial Multiport Card 1988
The Computone 3-01325 is an 8-port asynchronous serial multiport expansion card for ISA-bus PCs, part of Computone's ATvantage H product line. It provides eight RJ11 telephone-interface ports through a standard ISA bracket, allowing a PC to simultaneously manage multiple serial connections — most commonly analog modems, serial terminals, or dial-up access lines. The board carries firmware version 3.02 and was manufactured by Computone Systems Inc. in the USA in 1988.
Specifications & What's Included
- Manufacturer: Computone Systems Inc.
- Part Number (Assembly): 3-01325
- Fab Number: 1-11044, Rev A
- Product Line: ATvantage H
- Firmware Version: Ver. 3.02
- Bus Interface: ISA (Industry Standard Architecture), full-length card
- Number of Ports: 8
- Port Connector Type: RJ11 (mounted on ISA bracket)
- Main Controllers: SSS Z8430BB1 (Z80BCTC Counter/Timer) ×4; ST Z8442BB1 (Z80BSIO-2 Serial I/O) ×4
- Serial Protocol Controller: Siemens SAB82536P HDLC/Serial Communications Controller
- On-Board RAM: NEC D43256C-15L (32K×8 SRAM)
- Country of Manufacture: United States
- Year: 1988
- Included: Card only — no cables, software, or mounting hardware
Applications
The Computone ATvantage H series was designed for PC-based multi-user and communications server applications in the late 1980s and early 1990s. ISA multiport serial cards like this one were widely used in dial-up bulletin board systems (BBS), remote access servers, and multi-user DOS or Unix/Xenix environments where a single PC needed to drive multiple serial devices or modem lines simultaneously. The eight RJ11 ports allowed direct connection to standard telephone lines via modems, making it a practical solution for small-scale dial-up access concentrators. Computone was a notable vendor in this space, competing with DigiBoard, Arnet, and Chase Research. This card dates from the ISA-bus era — before PCI became standard in the mid-1990s — and today it is primarily sought by collectors restoring period-correct BBS or multi-user systems, or by operators maintaining legacy ISA-bus industrial PCs that still rely on this hardware.
This Computone 3-01325 ATvantage H 8-Port RJ11 ISA serial multiport card has been visually inspected and appears to be in good used condition. The PCB is clean with no visible cracked traces, burnt components, or physical damage. The 8 RJ11 ports on the bracket appear intact and undamaged. Normal handling wear is present consistent with a card previously installed in a system. This card has not been powered up or tested at our facility, but was pulled from a working environment where it was previously in use. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Computone |
Model: |
ATvantage H |
MPN: |
3-01325 |
Secondary Model: |
1-11044 Rev A |
Type: |
8-Port Async Serial Multiport ISA Card |
SKU: |
13281 |
Number of Ports: |
8 |
Connector Type: |
RJ11 |
Interface: |
ISA (Industry Standard Architecture) |
Bus Type: |
ISA |
Firmware Version: |
Ver. 3.02 |
Chipset: |
Zilog Z80B — Z8430BB1 (CTC) + Z8442BB1 (SIO-2) |
Secondary Chipset: |
Siemens SAB82536P HDLC Serial Controller |
Memory: |
NEC D43256C-15L 32Kx8 SRAM |
Country/Region of Manufacture: |
United States |
Year Manufactured: |
1988 |
Form Factor: |
ISA Full-Length Card |
Compatible With: |
IBM PC/AT and ISA-bus compatible systems |
Seller Notes: |
Card only — no cables, software, or mounting hardware included. |
Condition Notes: |
Computone 3-01325 ATvantage H 8-Port RJ11 ISA serial card in good used condition. PCB clean, 8 RJ11 ports intact. Not powered or tested at our facility; pulled from a working environment. Please contact us with 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 |
