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Black Box Modem Splitter 4 Port RS232-RJ45 Format

Black Box TL421A

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Model TL421A

UPC Code: 082208811930

Provantage Code:  BABXFN8

Condition:  Factory New

  • Product Type: Signal Splitter
  • Country of Origin: United States
  • Product Model: TL421A
  • TAA Compliant: Yes

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ComputingPower AccessoriesSignal Splitters/Amplifiers


Black Box TL421A Specifications

    Modem Splitter 4 Port RS232-RJ45 Format

At a Glance

    • Enables four RS-232 terminal devices to share a single modem.
    • Transmits data received from the modem to all attached terminal devices.
    • Passive, non-powered. Operates transparent to data formats and speeds.


    Featuring multiple ports for splitting modem signals, the compact 4-Port Modem Splitter (RS-232 on RJ-45) makes it easy and affordable for four terminals to share a single modem.

    With it, you can avoid the cost of having to purchase and install multiple modems and multiple modem lines.

    Plus, it's easy to set up and use. There are no user-configurable switches, jumpers, or settings on the modem splitter. Simply connect the modem and terminal (DTE) devices to it, then power up your modem and terminals as normal.

    The splitter's master port connects to your modem using an RJ-45 straight-through cable and the appropriate RJ or DB adapter. Its other ports (Port 1 through Port 4) connect to your DTE terminal devices.

    NOTE: Only one terminal device can send data to the modem at a time.


Product NameModem Splitter 4 Port RS232-RJ45 Format
Product TypeSignal Splitter
Number of Network (RJ-45) Ports5
Environmentally FriendlyYes
Environmental CertificationWEEE
Network (RJ-45)Yes
Country of OriginUnited States
Product ModelTL421A
Packaged Quantity1
Limited Warranty1 Year
WARNING: Products made with PVC can expose you to chemicals including DEHP, which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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Black Box Model TL421A