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RS232 Passive Splitter Rackmount Chassis - 2U, RJ45

A 19" chassis that enables you to rackmount your RS-232 RJ45 Modem Splitter Modules.


Limited Quantity In Stock
Typically Ships within One Week
1 Year Double Diamond™ Warranty (Standard)

*Required field

Product Features

  • Enables multiple splitters to be rackmounted.
  • 2U high. 19" wide
  • Does not include cards
  • For use with RS-232 RJ45 Passive Splitter Rackmount Cards (TL421-C, TL521-C, TL621-C and TL621-C)


The 2U rackmount enclosure is designed to hold 16 RS232 RJ45 passive splitters of varying port densities. These RS232 RJ45 passive Splitters are designed to permit multiple terminals to share a single modem. These passive devices are non-powered and transparent to data formats and speeds. The data from the modem is transmitted to all terminal devices. Only one terminal device may send data to the modem at a time. The Master Port is intended to be connected to a modem (DCE). All other ports are to be connected to terminals (DTE).

Tech Specs

Approvals CE, RoHS2
Connectors (1) single-style RJ-45 connector: MASTER; (1) quad-style RJ-45 connector: PORT 1-4; 5-, 6-, and 7-port models have the additional “Port n” connectors on the rear of the card
Dimensions 3.47”H x 19”W x 2.25”D (8.8 x 48.3 x 5.7 cm)
Environmental Temperature: Operating: 32 to 158° F (0 to 70° C); Storage: -4 to 185° F (-20 to 85° C);
Humidity up to 95% non-condensing
Interface RS-232
Leads Supported Pins 3,4,5,7, and 8 connected straight through between the MASTER and PORT 1-n. Pins 1, 2, and 6 “diode ORed” from PORT 1-n to the MASTER port
MTBF >100,000 hours
Power Non-powered; no power supply required
Weight 5.0 lb. (2.3 kg) (chassis plus 16 modem splitter cards installed)
This product works with:

This product works with:

  • RS-232 Modem Splitter with RJ-45 Rackmount Card, 4-Port (TL421-C)
  • RS-232 Modem Splitter with RJ-45 Rackmount Card, 5-Port (TL521-C)
  • RS-232 Modem Splitter with RJ-45 Rackmount Card, 6-Port (TL621-C)
  • RS-232 Modem Splitter with RJ-45 Rackmount Card, 7-Port (TL721-C)

* Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 877-877-2269.


Double Diamond Warranty Diamond

Double Diamond™ Warranty (Standard)

Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

The Double Diamond Warranty is our warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

The 2U RS232 RJ45 Passive Splitter Rackmount Chassis comes with a standard 1 Year Double Diamond™ Warranty (Standard) already included.

During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!*

Plus, get an Extended Double Diamond Warranty.

You can also extend your warranty or protect a previously purchased Black Box® brand product** for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 724-746-5500.

* Warranty subject to certain exclusions and limitations ** Certain products may not be eligible.

What’s more, we also have a 45-day return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.