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Prewired USOC Modular Jack Block - (12) 4-Wire

Prewired to save installation time.


Please call 877-877-2269 for a replacement product or part.
LIFETIME Doublediamond™ Warranty (Standard) DoubleDiamond™ Warranty (Standard)

Product Features

  • Use for new wiring installations and station conversions using existing wiring.
  • Extremely flexible, you can use these blocks in punchdown distribution cabling or as cable feeds from your network on quick clips.
  • Guaranteed for life!

Tech Specs

Connectors A: 66-type punchdown blocks; B: (12) RJ-11, 4-wire female
Dimensions 10"H x 1.75"W x 1.2"D (25.4 x 4.4 x 3 cm)
Punches 200 locations

* 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 Prewired USOC Modular Jack Block - (12) 4-Wire comes with a standard LIFETIME Doublediamond™ Warranty (Standard) warranty 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.