Description
Black Box MX330A-C 3174/3274 4-Port Rackmount Controller Side I-Mux Fiber Coax
Controller-side inverse multiplexer (I-Mux) for IBM 3174 and 3274 terminal control systems. Combines up to 4 controller signals into a single multiplexed output for transmission over fiber optic or copper coaxial cabling.
Specifications & What's Included
- 4 BNC coaxial controller input ports + 1 multiplexed output
- Supports up to 32 terminal signals
- Selectable fiber optic (ST/SMA) or copper BNC output via rear switch
- 1U rackmount form factor
- Power: 100-120 VAC, 0.3A, 47-63 Hz
- UL Listed, GS certified
- Includes original manual
Applications
Used in IBM mainframe and midrange computer environments to multiplex terminal controller signals over extended distances. Commonly deployed in enterprise data centers running 3174/3274 control units where fiber optic or long-distance copper runs reduced cabling costs and improved signal integrity. Device-side mux sold separately.
Condition: Used
This Black Box MX330A-C 3174/3274 Controller Side I-Mux has been inspected and is in good condition. The chassis is clean and shows only light shelf wear typical of a well-maintained rack unit. Front-panel LEDs and BNC controller ports appear intact, and the rear IEC power inlet and output ports show no damage. Please note this unit does not include the device-side mux; the original manual is included. Please view our photo set and contact us if you have any questions.
This Black Box MX330A-C 3174/3274 Controller Side I-Mux has been inspected and is in good condition. The chassis is clean and shows only light shelf wear typical of a well-maintained rack unit. Front-panel LEDs and BNC controller ports appear intact, and the rear IEC power inlet and output ports show no damage. Please note this unit does not include the device-side mux; the original manual is included. Please view our photo set and contact us if you have any questions.
Warranty Information
We stand behind every item we sell with a 30-day money-back guarantee. If your item arrives not as described, you may return it within 30 days for a full refund. Please inspect your purchase upon arrival and contact us with any questions.
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Additional Information
Brand: |
Black Box |
Model: |
MX330A-C |
MPN: |
MX330A-C |
SKU: |
24357 |
Type: |
Controller Side I-Mux (Inverse Multiplexer) |
Compatible With: |
IBM 3174 Establishment Controller |
Compatible With 2: |
IBM 3274 Control Unit |
Number of Ports: |
4 (Controller/BNC coax input) + 1 multiplexed output |
Interface Type: |
BNC Coaxial (controller ports); Fiber Optic; Copper BNC |
Output Type: |
Fiber Optic or Copper (BNC) — selectable via rear switch |
Max Terminal Signals: |
Up to 32 terminal signals |
Connector Type: |
BNC (coax controller ports and copper output); ST or SMA (fiber) |
Form Factor: |
1U Rackmount |
Power Requirements: |
100-120 VAC, 0.3A, 47-63 Hz |
Fuse Rating: |
T 250V 0.8A |
Certifications: |
UL Listed (1N17), ITE E160629, GS |
Condition: |
Used – Inspected, Good Condition |
Seller Notes: |
Includes original manual. Does not include device-side mux. |
Country/Region of Manufacture: |
United States |
Condition Notes: |
Black Box MX330A-C Controller Side I-Mux inspected and in good condition. Light shelf wear only. Includes original manual. Does not include device-side mux. Please contact us with any questions. |
