Description
Siemens S30810-Q1775-X MEM-4 Memory Card PBX Plug-In Board 4980042613-0211
The Siemens S30810-Q1775-X is a MEM-4 designation plug-in memory card designed for use in Siemens business telephone and PBX switching systems, including the HICOM and EWSD product families. This type of card provides memory expansion or system memory functions within the PBX chassis, supporting the call-processing and configuration storage demands of large enterprise switching platforms. The board carries part number 4980042613-0211 at hardware revision A2-F01 and is populated with a full complement of memory ICs across both main banks.
Specifications & What's Included
- Manufacturer: Siemens
- Model / Part Number: S30810-Q1775-X
- Secondary Part Number: 4980042613-0211
- Board Designation: MEM-4 (Memory Card)
- Hardware Revision: A2-F01
- Board Material Rating: 94 VO (UL flame rating, visible on board edge)
- Date Code: 4886 (week 48, 1986)
- Form Factor: Plug-in card with gold edge connector
- Memory ICs: Multiple Hitachi HM502858P-12 and HP/Siemens U2316NN DIP packages populated across main arrays
- Additional ICs: Siemens and Samsung logic/support chips visible on secondary component areas
- Included: Card only — no chassis, backplane, or additional accessories
Applications
The Siemens HICOM and EWSD series were enterprise-grade digital PBX and telephone switching platforms widely deployed from the mid-1980s through the 2000s in large corporate, government, and institutional telephone networks. Memory cards like the MEM-4 provide the onboard RAM needed for the switching fabric's real-time call routing tables, system configuration data, and subscriber records. They are installed directly into dedicated card slots within the PBX cabinet or shelf. These cards are still needed today as spare and replacement parts for organizations maintaining legacy Siemens PBX infrastructure, where the cost of a full system migration often makes sourcing individual replacement boards the practical choice. Technicians servicing aging HICOM and EWSD installations commonly seek out cards like this S30810-Q1775-X to restore failed systems or expand memory capacity in existing deployments.
This Siemens S30810-Q1775-X MEM-4 plug-in memory card has been inspected and is in good condition. It was pulled from a working PBX environment where it was actively in use and functional. The board shows normal light wear consistent with service use; the edge connector fingers are in good shape with no visible damage, and the PCB shows no obvious cracks, burnt components, or physical damage. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Siemens |
Model: |
S30810-Q1775-X |
MPN: |
4980042613-0211 |
Secondary Model: |
MEM-4 |
Hardware Revision: |
Rev A2-F01 |
Type: |
PBX Plug-In Memory Card |
Form Factor: |
Card/Module (Plug-In) |
Compatible With: |
Siemens HICOM / EWSD PBX Systems |
Interface Type: |
Edge Connector (Plug-In Board) |
Condition: |
Used – Pulled from Working Environment |
SKU: |
41694 |
Seller Notes: |
Card only; no chassis or additional accessories included. |
Country/Region of Manufacture: |
Germany |
Condition Notes: |
Siemens S30810-Q1775-X MEM-4 memory card. Inspected, in good condition. Pulled from a working PBX environment where it was in use and functional. Edge connector and board in good shape. No visible damage. |
