One Beat OB4W4US Outlet Extender, 4 AC Outlets, 4 USB Ports, 20W PD
Product description
Travellers who need to charge several devices from one wall outlet can use the One Beat OB4W4US to create a compact charging point for a cruise cabin, hotel room or other travel stop.
Its three-sided layout provides four AC outlets and four USB ports, including two USB-C ports. The 20W total USB output gives phones and other USB devices a shared place to charge.

The extender plugs directly into the wall, with no extension cord, and is also suited to a home office or dorm room. Its non-surge-protector design is a practical detail for cruise travel, ship policies can vary, and some Disney and Royal Caribbean ships may not allow it.


Best use cases

Use the extender when one wall outlet needs to serve both plug-in equipment and USB-charged devices. In a hotel room, for example, its AC sockets can accommodate devices with compatible plugs while the USB ports provide charging access for cell phones. At a desk or in a dorm room, the three-sided arrangement spreads the outlets around the plug rather than placing every connection in one straight line.
For travel, the compact, cord-free format is easy to pack and avoids carrying a separate power bar with an extension cord. It is described as suitable for cruise ships, hotels, flights, home offices and beach holidays. Cruise rules differ by ship, so check the policy for your sailing, some Disney and Royal Caribbean ships may not permit this type of extender.



Product specs
- Type: Wall outlet extender and USB charging station
- Model: OB4W4US
- AC outlets: 4 (one 3-prong outlet and three 2-prong outlets)
- USB ports: 4, including 2 USB-C ports
- Total USB output: 20W
- Plug type: Type A
- Surge protection: Non-surge-protector design
- Certifications: ETL and FCC

What stands out


The main advantage is having AC and USB connections together in one wall-mounted unit. Rather than choosing between a basic multi-outlet adapter and a separate USB charger, this extender brings both functions into the same compact format. Four AC outlets serve plug-in devices, while four USB ports provide charging connections for phones and other USB electronics. The USB output is shared, with a total rating of 20W.

Its three-sided layout is designed to keep the outlet arrangement space-conscious and avoid blocking other wall outlets. The direct-plug design also means there is no cord to manage in a suitcase or around a bedside table. That makes it a useful fit for travellers packing light, as well as for everyday charging in a home office or dorm.
The product is identified as a non-surge-protector, cord-free extender for cruise travel. It is listed for use on major cruise lines, while some ships operated by Disney and Royal Caribbean may not allow it. The ETL and FCC certifications are also listed, offering useful product details when comparing travel charging adapters.

Final verdict
The One Beat OB4W4US is built for people who want several charging connections in one compact wall adapter, especially when travelling with both plug-in and USB-powered devices. Its four AC outlets, four USB ports, two USB-C connections and 20W total USB output make it a practical charging hub for a hotel stay, cruise trip, dorm room or home office. Choose it when a direct-plug, cord-free format suits your setup and the outlet rules at your destination.
Products with discounts that might interest you
- One Beat OB6AC2W Outlet Extender, 6 AC Outlets, 4 USB Ports, 1,800J
- Huntkey SME607 Power Strip 2-Pack, 6 Outlets, USB-A/C, Flat Plug
- TROND Power Bar with 2 USB-C Ports
- TROND Power Bar with 5 AC Outlets
- TROND Surge Protector Power Bar, 10 Outlets
- TROND Power Bar Surge Protector 15 ft
- USB Outlet Extender, 6 AC Outlets
- Power Bar with 6 Ft Cord
- Addtam AD309 Flat Plug Power Bar, 12 Outlets, 900J Surge Protection
- Addtam Power Bar with 6 Outlets
- mifaso MFS311BL Surge Protector Power Strip, 10 ft Cord, 6 Outlets & 4 USB Ports
- mifaso 10 ft Power Strip with 6 Outlets, 4 USB Ports and Flat Plug
- TROND 3-Outlet Extension Cord, 3 ft
- Coreykin PA-1650-32HE 65W HP Laptop Charger with Smart Blue Tip
- Dght B6 80W RC Battery Balance Charger for LiPo, Li-ion, NiMH and Pb
- Donner DP-1 Isolated Guitar Pedal Power Supply, 10 Outputs, 9V/12V/18V
- EEIVOL M7 10,000mAh Power Bank with 4 Built-In Cables and LED Display
- EFTTIVID XH65W PD 65W USB-C Laptop Charger for Dell
- Evopow M5 2-Pack 10,000mAh Power Banks, Slim Design, 3 Outputs
- EXW T8 3-in-1 Magnetic Wireless Charger, Qi2.2 25W, Foldable
- Gatatol P25 Magnetic Power Bank, 10,000mAh, 15W Wireless Charging
- GDTOWD SM130CS-01 130W USB-C Laptop Charger with AC Adapter and Power Cord
- GKP9 Starlink-B Starlink Mini Vehicle Power Cable with Digital Display, 10 ft
- Gqohrt H-36 Dual-Port USB Wall Charger, 2.1A, 2-Pack

