When the chargers start stacking on top of each other behind the monitor, a best vertical power strip stacks them upward instead, trading a tangled mat of plugs for a tidy column. A tower keeps heavy adapters off the floor and within arm’s reach, while a wall-mountable bar can tuck the whole supply behind the desk. We compared five vertical power strips by outlet count, USB charging, surge protection ratings, plug and cord design, and warranty, using only what each listing publishes.
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Quick picks
Best Overall TESSAN 11-Outlet Tower: 11 outlets and 3 USB ports in a compact 4-side tower. Check price on Amazon
Best Surge Rating olcorife 16-in-1 Tower: 2000-joule rating with 12 outlets and 4 USB ports. Check price on Amazon
Best Metal Build oviitech Metal 8-Outlet: ETL-certified aluminum housing, 15A circuit breaker. Check price on Amazon
Best Switch Control TESSAN 12-Outlet Tower: Individual switches on 4 sides; 12 outlets, 5 USB. Check price on Amazon
Title-Only Listing Addtam 12-Outlet Strip: Title lists 12 outlets and 1050J; little else stated. Check price on Amazon
The picks
| # | Product | Office Score | Buy |
|---|---|---|---|
| 1 | TESSAN 11-Outlet Tower | 9.7/10 | Buy on Amazon |
| 2 | olcorife 16-in-1 Tower | 9.7/10 | Buy on Amazon |
| 3 | oviitech Metal 8-Outlet | 9.6/10 | Buy on Amazon |
| 4 | TESSAN 12-Outlet Tower | 9.6/10 | Buy on Amazon |
| 5 | Addtam 12-Outlet Power Strip | 9.6/10 | Buy on Amazon |

TESSAN 11-Outlet Tower
A compact 4-side tower with 11 AC outlets, 3 USB ports and a 1050J surge rating.
Pros
- 11 AC outlets plus 3 USB ports in one tower
- 1050J surge rating with overload, short-circuit and over-current protection
- 0.31-inch flat plug sits flush against the wall
- 2-year warranty stated by the maker
Cons
- No individual outlet switches
- Title says grey, spec table says white
- No wattage rating stated
- The 4-side layout may crowd large adapters
Detailed Review
The TESSAN listing states an 11-outlet, 3-USB tower with 1050J surge protection, a 6-foot cord and a 0.31-inch flat plug, with overload, short-circuit and over-current protection. One wrinkle: the title says the unit is grey while the spec table lists the color as white; the title and bullets win and this review calls it grey. The maker states a 2-year warranty.
Who it's for: desk setups that need a compact 2.55-inch-square column of outlets with both USB A and USB C. Who should skip it: buyers who need individual switches or a stated joule rating above 1050J.
Its Office Score of 9.7/10 comes from performance 30/35, build 21/25, value 21/25, safety 8/10 and warranty 3/5: 83 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Outlets | 11 AC |
|---|---|
| USB ports | 3 (1 USB C) |
| Surge rating | 1050J |
| Cord | 6 ft flat plug |
Figures as published on the retailer listing, collected 23 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. 1050J surge protection with overload, short-circuit and over-current protection, so safety scores 8 of 10. The maker states a 2-year warranty. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 3 of 5. See How We Pick.
Surge protector limits. Look for a UL 1449 listing, never plug one strip into another, keep the total load under the stated rating, and replace the unit after a major surge or when its indicator says protection has ended.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
Pros
- 2000-joule rating is the highest stated here
- 12 AC outlets plus 4 USB ports
- 0.31-inch flat plug sits flush against the wall
- Short-circuit and over-current protection stated
Cons
- No individual outlet switches
- Enclosure material listed as copper with no further detail
- Warranty is 1 year, not longer
- Compact 3.7-inch tower may crowd large adapters
Detailed Review
The olcorife listing states a 12-outlet, 4-USB tower with a 2000-joule rating, a 6-foot cord and a 0.31-inch flat plug, plus short-circuit and over-current protection. The spec table and bullets agree on the counts, and the maker states a 1-year warranty.
Who it's for: home offices that want the highest stated surge rating in this roundup. Who should skip it: anyone counting on individual outlet switches, which this listing does not state.
Its Office Score of 9.7/10 comes from performance 30/35, build 20/25, value 21/25, safety 9/10 and warranty 3/5: 83 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Outlets | 12 AC |
|---|---|
| USB ports | 4 (2 USB C) |
| Surge rating | 2000J |
| Cord | 6 ft flat plug |
Figures as published on the retailer listing, collected 23 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. 2000-joule surge protection with short-circuit and over-current protection, so safety scores 9 of 10. The maker states a 1-year warranty. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 3 of 5. See How We Pick.
Surge protector limits. Look for a UL 1449 listing, never plug one strip into another, keep the total load under the stated rating, and replace the unit after a major surge or when its indicator says protection has ended.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.

oviitech Metal 8-Outlet
An ETL-certified aluminum alloy strip with 8 outlets and a 15A circuit breaker.
Pros
- ETL certification stated
- Aluminum alloy housing with mounting brackets and screws
- Integrated 15A circuit breaker
- 1875W rating on a 14 AWG cord
Cons
- Only 8 outlets, no USB ports stated
- Not a tower: the 35.25-inch bar needs its own plan
- Spec table color entry disagrees with the title
- Warranty is 1 year, not longer
Detailed Review
The oviitech listing states an 8-outlet aluminum alloy strip rated 15A, 125V, 1875W, with a 6-foot 14 AWG cord, an integrated 15A circuit breaker and ETL certification. One wrinkle: the spec table lists the color as Yellow&balck while the title says aluminum alloy silver with a black hole; the title wins and this review calls it silver. The maker states a 1-year warranty.
Who it's for: workshops and benches where a metal housing and mounting brackets matter. Who should skip it: shoppers who want USB charging or a tower footprint, which this listing does not state.
Its Office Score of 9.6/10 comes from performance 26/35, build 22/25, value 19/25, safety 9/10 and warranty 3/5: 79 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Outlets | 8 AC |
|---|---|
| Rating | 15A, 125V, 1875W |
| Cord | 6 ft, 14 AWG |
| Housing | Aluminum alloy |
Figures as published on the retailer listing, collected 23 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. ETL certified, with an integrated 15A circuit breaker, so safety scores 9 of 10. The maker states a 1-year warranty. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 3 of 5. See How We Pick.
Surge protector limits. Look for a UL 1449 listing, never plug one strip into another, keep the total load under the stated rating, and replace the unit after a major surge or when its indicator says protection has ended.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
Pros
- Independent switches on 4 sides
- 12 outlets plus 5 USB ports for 17 devices
- Two USB C ports at 5V 3A, 15W max per port
- 0.31-inch flat plug sits flush against the wall
Cons
- No warranty term is stated
- No joule rating is stated
- Port count in the spec table disagrees with the title
- 10A maximum current is the lowest stated here
Detailed Review
The TESSAN listing states a 12-outlet, 5-USB tower with independent switches on 4 sides, a 6-foot cord and a 0.31-inch flat plug, charging up to 17 devices at once. One wrinkle: the spec table lists 12 ports while the title and bullets describe 12 outlets plus 5 USB ports; the title and bullets win and this review uses 17 devices. No warranty term is stated.
Who it's for: dorms and offices where switching devices off without unplugging matters. Who should skip it: buyers who want a stated warranty term or a joule rating, which this listing does not state.
Its Office Score of 9.6/10 comes from performance 32/35, build 20/25, value 21/25, safety 7/10 and warranty 0/5: 80 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Outlets | 12 AC |
|---|---|
| USB ports | 5 (2 USB C) |
| Switches | Individual |
| Cord | 6 ft flat plug |
Figures as published on the retailer listing, collected 23 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. Surge protection stated, with independent outlet switches, so safety scores 7 of 10. No warranty term, so warranty scores zero. See How We Pick.
Surge protector limits. Look for a UL 1449 listing, never plug one strip into another, keep the total load under the stated rating, and replace the unit after a major surge or when its indicator says protection has ended.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.

Addtam 12-Outlet Power Strip
A 12-outlet, 3-sided power strip with a slim flat plug and 1050J surge protection for tight desk and wall setups.
Pros
- 12 outlets on 3 sides with wide spacing
- 1050J surge protection with on/off switch
- ETL safety certified with UL-certified cord
- 0.35 in flat plug with 4 mounting screws included
Cons
- 5 ft cord vs the Plug'n's and Tiffcofio's 6 ft
- 1 year manufacturer warranty vs the Tiffcofio's 2 years
- Amperage 3 A in the spec table contradicts the 15 A maximum current
- No housing material is stated
Detailed Review
The Addtam wins on outlet count: 12 outlets across 3 sides with wide spacing is the most here, and the 0.35 in flat plug lets it sit close to the wall behind furniture. The ETL safety certification and UL-certified cord are the strongest certification claims in the set, and the included mounting screws make wall or desk mounting easy.
One contradiction: the spec table lists 1 Total USB Port, but the title and bullets mention no USB port at all, so trust the title and bullets. Another: the spec table lists Amperage as 3 A while the bullets claim 15A current carrying capacity, so treat the 15 A figure from the bullets as the operative one. The title says 'Home Office Dorm Room Essentials' and lists air conditioner compatibility, which reads like keyword stuffing rather than a real use case.
Its Office Score of 9.6/10 comes from performance 30/35, build 20/25, value 20/25, safety 8/10 and warranty 3/5: 81 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Outlets | 12 |
|---|---|
| Surge rating | 1050J |
| Cord | 5 ft |
| Flat plug | 0.35 in |
Figures as published on the retailer listing, collected 22 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. ETL safety certified; UL-certified cord; overload, short-circuit and over-current protection, so safety scores 8 of 10. 1 year manufacturer. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 3 of 5. See How We Pick.
Surge protector limits. Look for a UL 1449 listing, never plug one strip into another, keep the total load under the stated rating, and replace the unit after a major surge or when its indicator says protection has ended.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
As an Amazon Associate I earn from qualifying purchases.
Compare the picks
| Power strip | Office Score | Outlets | USB ports | Surge rating | Cord | Warranty | Amazon |
|---|---|---|---|---|---|---|---|
| TESSAN 11-Outlet Tower | 9.7/10 | 11 AC | 3 (1 USB C) | 1050J | 6 ft flat plug | 2 years | View on Amazon |
| olcorife 16-in-1 Tower | 9.7/10 | 12 AC | 4 (2 USB C) | 2000J | 6 ft flat plug | 1 year | View on Amazon |
| oviitech Metal 8-Outlet | 9.6/10 | 8 AC | Not stated | Surge protection stated | 6 ft | 1 year | View on Amazon |
| TESSAN 12-Outlet Tower | 9.6/10 | 12 AC | 5 (2 USB C) | Surge protection stated | 6 ft flat plug | Not stated as a term | View on Amazon |
| Addtam 12-Outlet Strip | 9.6/10 | 12 AC | Not stated | 1050J | Flat, length not stated | Not stated as a term |
Specifications are manufacturer rated as listed, collected 23 October 2026. Three of the five state a warranty term.
How we scored them
The Office Score weighs performance (outlet and USB count, stated charging rates), build (housing materials, tower stability, cord gauge), value (features per listed spec), safety (stated surge protection, overload and circuit protection, certifications) and warranty. For power strips, safety means the protections a listing actually names: the towers state 2000J and 1050J ratings, the metal bar states ETL certification and an integrated 15A circuit breaker. Three of the five list a warranty term. How we pick explains the weights.
| Product | Office Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| TESSAN 11-Outlet Tower | 9.7 | 30 | 21 | 21 | 8 | 3 |
| olcorife 16-in-1 Tower | 9.7 | 30 | 20 | 21 | 9 | 3 |
| oviitech Metal 8-Outlet | 9.6 | 26 | 22 | 19 | 9 | 3 |
| TESSAN 12-Outlet Tower | 9.6 | 32 | 20 | 21 | 7 | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.
How to choose the best vertical power strip
Count outlets and USB ports before anything else
The counts spread wide: one TESSAN tower lists 11 AC outlets with 3 USB ports, the olcorife and second TESSAN towers list 12 AC outlets each, and the metal bar lists 8 AC outlets with no USB ports at all. USB C appears on three towers: the TESSAN 11-outlet model lists one USB C at 3A, while the olcorife and second TESSAN list two USB C ports each, with the TESSAN stating 5V 3A and 15W max per port. If every device you own charges over USB, the towers with two USB C ports matter; if the workload is all plugs, the 8-outlet metal bar still covers a full desk. See the surge protector and cable management guides for more protection options, and docking stations and USB hubs for desk connectivity.
Read the surge protection line
The olcorife tower states a 2000J rating with short-circuit and over-current protection, and the TESSAN towers state 1050J with overload, short-circuit and over-current protection. The metal bar takes a different route: ETL certification and an integrated 15A circuit breaker, with the listing stating surge protection and a 14 AWG cord. The second TESSAN model states surge protection but no joule rating, so compare the named protections rather than assuming. A higher joule rating states more absorbed energy per the listing’s own claim.
Match the plug, cord and footprint to your desk
Four of the five list a 6-foot cord, and both the TESSAN towers and the olcorife list a 0.31-inch flat plug that sits flush against the wall and hides behind furniture. Footprints differ: the TESSAN towers list 2.55-inch and 5-inch square bases, the olcorife lists a 3.7-inch square, and the metal bar stretches 35.25 inches long with mounting brackets and screws in the box. Measure the desk edge before choosing between a column and a bar.
Check the warranty line
The TESSAN 11-outlet tower states a 2-year warranty, the oviitech metal bar and the olcorife tower state 1 year, and the remaining two list no warranty term. A longer stated term lifts the warranty portion of the Office Score, which is why the 2-year listing ranks first overall.
Setup Notes
- Check the base: tower listings state 2.55-inch, 3.7-inch and 5-inch square footprints, while the metal bar stretches 35.25 inches long.
- Plan the cord: four listings state a 6-foot cord, and three list a 0.31-inch flat plug for tight spots behind furniture.
- Count the plugs first: 8 to 12 AC outlets across the listings, with up to 5 USB ports on one model.
- Read the protections: joule ratings, a 15A circuit breaker and ETL certification are the stated safety claims.
Frequently Asked Questions
How many devices can one tower power strip charge?
The TESSAN 11-outlet listing states 14 devices at once, the second TESSAN model states 17 devices, and the olcorife listing states 12 AC outlets plus 4 USB ports.
What does the joule rating on a surge protector mean?
The joule rating states how much surge energy the unit claims to absorb. The olcorife tower lists 2000 joules, and the TESSAN towers list 1050 joules.
Can the flat plug fit behind furniture?
The TESSAN and olcorife listings state a 0.31-inch flat plug that sits flush against the wall, designed to hide behind a sofa, bed or nightstand.
Do any of these have individual outlet switches?
The second TESSAN model lists independent switches on 4 sides, so devices can be switched on or off separately without unplugging them.
What warranty terms do the listings state?
The TESSAN 11-outlet tower states a 2-year warranty, the oviitech and olcorife models state 1 year, and the other two state no warranty term.
Related guides
See every Surge Protectors and Cable Management guide and all Audio, Power and Connectivity guides.
More picks: docking stations and USB hubs, standing desks and keyboards.






