
#TL421-C
RS232 Passive Splitter Rackmount Card - RJ45, 4-Port
Passively share one RS232 DCE device with four RS232 DTE devices.
Product Features
- 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.
- Only one terminal device can send data to the modem at a time.
- Transparent to data formats, rates and protocols.
- RS232 data output by the attached terminal devices is logically OR gated by the modem splitter and then transmitted to the modem.
With this system, 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 works with:
* Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 1-877-877-2269.

1 Year Double Diamond™ Warranty (Standard)
Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box.
Our Double Diamond Warranty* protects your Black Box® brand products from manufacturing and/or material defects.
The TL421-C comes with a standard 1 Year Double Diamond Warranty*. During the warranty period, Black Box will repair or replace your damaged equipment at NO CHARGE!*
What’s more, we also have a 30-day return policy on most products. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package to receive a full refund.** Click here to find your local sales office to obtain a Return Authorization.
Extended Double Diamond Warranty.
Extend the warranty on select products or protect eligible previously purchased Black Box® brand items for an additional year - at just 10% of the original purchase price or for three years for only 20% of the purchase price.
* Warranty subject to certain exclusions and limitations. Click here to view our full terms and conditions.
** Returns contingent upon specific exclusions and limitations. Click here to view our full return policy.