Description
Local Data InterLynx 3287-NPP IBM 3174 Compatible Cluster Controller RS-232
The Local Data InterLynx 3287-NPP is a desktop cluster controller designed to be compatible with the IBM 3174 Establishment Controller. It serves as an interface device connecting IBM 3270-family terminals and printers to SNA (Systems Network Architecture) host environments, functioning as a drop-in or compatible alternative to the IBM 3174 in legacy mainframe and midrange terminal networks. Part number 301-0011-01.
Specifications & What's Included
- Make: Local Data
- Model: InterLynx 3287-NPP
- Part Number (MPN): 301-0011-01
- IBM 3174 compatible cluster controller
- Form factor: Desktop/benchtop enclosure (blue and black steel chassis)
- Rear interface: Parallel port – J2 (DB25)
- Rear interface: RS-232 I/O – J3 (DB25), DCE/DTE selectable via toggle switch
- Rear interface: NORM-TE port section with large transistor/component module
- Rear interface: BNC connector – J5
- Power: IEC C14 AC inlet with rocker power switch (1/0)
- Front panel LEDs: ST, RD, TST, DCE, PWR indicators
- Unit only — no manual or accessories included
Applications
The IBM 3174 Establishment Controller was IBM's primary cluster controller of the 1980s and early 1990s, connecting groups of 3270-family dumb terminals and printers to IBM mainframe hosts over SNA networks. Third-party manufacturers like Local Data produced compatible cluster controllers — such as the InterLynx 3287-NPP — that performed the same function at lower cost, enabling sites to expand their terminal networks without purchasing additional IBM hardware. These units typically connected to the host via coaxial or SDLC links and supported both local and remote configurations. The 3287-NPP's parallel and RS-232 interfaces suggest it was primarily oriented toward connecting 3287-type line printers or similar peripherals within an IBM SNA environment. This type of equipment dates from the mid-to-late 1980s era of IBM SNA/SDLC mainframe networking. Today these units are sought by organizations maintaining legacy IBM midrange or mainframe environments, and by collectors of vintage IBM-compatible networking hardware.
This Local Data InterLynx 3287-NPP IBM 3174 compatible cluster controller is in good used condition. The unit shows normal wear consistent with previous office or data center use — the blue and black enclosure is intact with no significant damage observed. All rear-panel ports are present, including the Parallel (J2), RS-232 (J3), NORM-TE, and BNC (J5) connectors. The front-panel LED indicators (ST, RD, TST, DCE, PWR) are visible. This unit has not been powered up or bench-tested at our facility; it is sold as inspected. 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: |
Local Data |
Model: |
3287-NPP |
MPN: |
301-0011-01 |
Secondary Model: |
InterLynx 3287-NPP |
Compatible With: |
IBM 3174 Cluster Controller |
Compatible With 2: |
IBM 3270, IBM SNA networks |
Interface Type: |
RS-232, Parallel, NORM-TE |
Connector Type: |
DB25 (Parallel J2), DB25 (RS-232 J3), BNC (J5) |
DCE/DTE: |
DCE/DTE selectable |
Form Factor: |
Desktop / Benchtop |
Power Input: |
AC Input (IEC C14 inlet, power switch) |
Condition: |
Used – Inspected |
Seller Notes: |
Unit only; no manual included. All visible ports present. |
Country/Region of Manufacture: |
United States |
Condition Notes: |
Local Data InterLynx 3287-NPP IBM 3174 compatible cluster controller in good used condition. Shows normal wear. All ports present. Not bench-tested at our facility; sold as inspected. Contact us with questions. |