Description
IBM 92F4555 ISA 8-Bit Token Ring Network Card 16/4 Mbps 9-Pin DB9 92F4555B
The IBM 92F4555 is an ISA 8-bit Token Ring network adapter card designed for connecting PCs to IBM Token Ring local area networks. Token Ring was IBM's LAN architecture that transmits data in a deterministic ring topology at either 4 Mbps or 16 Mbps, and this card supports both speeds as indicated by the 16/4 sticker on the bracket. The card connects to the network via a DB9 9-pin connector on the rear bracket. The board carries the revision designation 92F4555B and assembly number 3151042, visible on the printed label on the component side.
Specifications & What's Included
- Part Number: 92F4555 / 92F4555B
- Assembly Number: 3151042
- Bus Interface: ISA 8-bit
- Network Technology: Token Ring
- Data Rate: 16/4 Mbps
- Connector: DB9 9-pin (rear bracket)
- Main Controller: Bel S310 B (visible on primary IC)
- Logic ICs: Motorola LS125A (XAB311) — multiple ICs present on board
- FCC Class A certification (noted on bracket label)
- Manufactured in Hong Kong
- Card only — no cables or accessories included
Applications
Token Ring network adapters like the IBM 92F4555 were used in IBM PC/AT and compatible desktop systems to connect to IBM Token Ring LANs, which were common in corporate and government environments throughout the late 1980s and 1990s. Token Ring networks were frequently deployed alongside IBM midrange systems such as the AS/400, System/36, and System/38, and in environments running IBM mainframe connectivity. Today these cards are sought by collectors, legacy system maintainers, and IT historians preserving period-correct IBM PC or PS/2 network environments. The ISA 8-bit form factor makes this card compatible with a wide range of vintage IBM PC/AT and XT-class machines.
This IBM 92F4555B ISA 8-bit Token Ring network card has been inspected and appears to be in good used condition. It was pulled from a working environment where it was previously in service. The board is clean with no visible damage, broken traces, or missing components. The DB9 bracket connector shows minor surface oxidation typical of age. The PCB carries its original label (92F4555B / 3151042) and all major ICs are present and intact. 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: |
IBM |
Model: |
92F4555 |
MPN: |
92F4555B |
Secondary Model: |
3151042 |
SKU: |
7981 |
Type: |
Token Ring Network Adapter Card |
Bus Interface: |
ISA 8-bit |
Data Rate: |
16/4 Mbps |
Connector Type: |
DB9 9-pin |
Network Technology: |
Token Ring |
FCC Class: |
Class A |
Form Factor: |
ISA Card |
Condition: |
Used – Pulled from Working Environment |
Seller Notes: |
Card only; no cables or accessories included. |
Country/Region of Manufacture: |
Hong Kong |
Compatible With: |
IBM PC/AT and compatible ISA bus systems |
Network Chipset: |
Bel S310 B (visible on main controller IC) |
Condition Notes: |
IBM 92F4555B ISA Token Ring card pulled from a working environment. Board is clean with no visible damage; all ICs present. Bracket shows minor age oxidation. Good used condition. Contact us with any questions. |
