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. |
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 |
