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[ETL Listed] Cable Matters 3-Pack 3 Outlet Wall Adapter (Grounded Cube Tap, Outlet Splitter, 3 Way Plug Adapter, 3-Prong Power Splitter), Black
Cable Matters

Cable Matters 3-Pack 3 Outlet Wall Adapter

Bottom line: The Cable Matters 3-Pack 3 Outlet Wall Adapter ($9.99 on Amazon as of 2026-10-06): 90-degree body keeps bulky wall warts from blocking the adjacent receptacle; main trade-off: two adapters will not fit side by side on the same duplex outlet.

$9.99

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Buy on Amazon — $9.99 Compare to similar accessories

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 90-degree body keeps bulky wall warts from blocking the adjacent receptacle
  • ✓ Turns one grounded outlet into 3 AC outlets with no power strip bulk
  • ✓ 3-pack at 9.99 covers desk, nightstand, and travel bag at once
  • ✓ ETL Listed, with a grounded 3-prong pass-through
  • ✓ Accepts both 3-prong grounded and 2-prong polarized cords

Cons

  • ✗ Two adapters will not fit side by side on the same duplex outlet
  • ✗ No surge protection, so sensitive electronics still need a separate strip
  • ✗ No USB ports, unlike many modern wall taps at this price
  • ✗ Three outlets share one receptacle circuit, so high-draw loads add up fast

Manufacturer description

The Cable Matters 3 Outlet Wall Adapter solves a problem every cramped power situation runs into: one grounded receptacle, three things that need plugging in. Each cube tap converts a single 3-prong outlet into three AC outlets, and the 90-degree design is the part that matters most. Bulky wall warts sit flush against the wall instead of jutting straight out, so they stop crowding the receptacle above or below. That said, the geometry cuts both ways: two of these adapters cannot sit side by side on the same duplex outlet. You get three adapters in the pack, which is why this ends up…

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SpecPicks Verdict

SpecPicks scored Cable Matters 3-Pack 3 Outlet Wall Adapter using a rating × review-volume × price-fit model applied to published specs and reviews across the accessories category. Cable Matters's accessories lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for accessories of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Does this have surge protection?

No. This is a passive 3-outlet cube tap with a grounded pass-through, not a surge protector. Pair it with a surge strip for a PC, TV, or other sensitive electronics.

Can I plug two of these into the same wall outlet?

No. Cable Matters notes that while the 90-degree design will not block the other receptacle, two of these adapters cannot fit side by side on the same wall outlet.

Will it work with 2-prong plugs?

Yes. It accepts both 3-prong grounded cords and 2-prong polarized cords, and it works on sideways-oriented AC receptacles as well.

How many adapters come in the pack?

Three. The 3-pack is priced around 9.99, which is why buyers commonly split them between home, office, and a travel bag.

Key Features

  • Sturdy 3 Wall Outlet Extender: This multi plug wall outlet adapter converts a single grounded outlet into 3 additional AC electrical outlets, offering a space-saving solution without the bulk of a traditional power strip.
  • 90 Degree Outlet Adapter: The innovative 90-degree design allows large wall warts and adapters to fit without blocking adjacent outlets, making this electrical outlet extender perfect for tight spaces. Note: It won’t block the other outlet, but two of these adapters cannot fit side by side on the same wall outlet.
  • Cost-Effective 3-Pack: This set of three power outlet extenders provides extra wall plugs, making it convenient for travel or keeping in your laptop bag, ensuring reliable access to power wherever you go.
  • Space-Saving Design: The compact 3 outlet cube tap (also known as plug splitter or power outlet splitter) is ideal for use behind furniture or in tight spaces, adding additional outlets in hotel rooms, conference rooms, or areas with limited AC receptacles.
  • Versatile Compatibility: Works with 3-prong grounded cords and 2-prong polarized electrical cords, this multi plug outlet solution is perfect for sideways AC receptacles and offers a convenient way to expand power access.

Full Specifications

BrandCable Matters
ColorBlack
Plug TypeType B
Unit Count3.0 Count
Model Number400011-BLKx3
Power SourceAC adapter
Input Voltage125 Volts
Output Voltage125 Volts (AC)
Mfr Part Number400011-BLKx3
Number of Outlets3
Full listing title[ETL Listed] Cable Matters 3-Pack 3 Outlet Wall Adapter (Grounded Cube Tap, Outlet Splitter, 3 Way Plug Adapter, 3-Prong Power Splitter), Black

Ready to buy?

[ETL Listed] Cable Matters 3-Pack 3 Outlet Wall Adapter (Grounded Cube Tap, Outlet Splitter, 3 Way Plug Adapter, 3-Prong Power Splitter), Black is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $9.99

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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[ETL Listed] Cable Matters 3-Pack 3 Outlet Wall Adapter (Grounded Cube Tap, Outlet Splitter, 3 Way Plug Adapter, 3-Prong Power Splitter), Black
$9.99
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