The strip behind your desk is the single point everything else plugs into. Your monitor, your laptop charger, your dock, your speakers, and your phone all hang off it, and that is easily two to four thousand dollars of gear sharing one connection to the wall. When a surge comes down the line during a storm or when a big appliance kicks on elsewhere in the house, that strip is the only thing standing between the spike and your electronics. A real surge protector clamps the voltage and saves the gear; a plain strip just passes the spike straight through.
Most people buy the wrong one because the box does not make the difference obvious. A six-dollar strip and a forty-dollar surge protector look nearly identical on the shelf, and both have outlets and a switch. The thing that separates them is the joule rating, which is printed in small text or left off entirely on the cheap ones, and that number is exactly the spec that determines whether your gear survives. Below we eliminate the tiers that cannot protect your desk, the four specs that decide which one to buy, and the specific units we would put behind our own setups.
How to Choose a Power Strip#
Start by ruling out the options that cannot do the job, because each one fails in a way you can predict before you buy.
The wall outlet alone gives you two sockets and zero protection. A modern desk needs five to eight plugs, so you are already short, and the wall provides no surge clamping whatsoever. Disqualified the moment you have more than two things to plug in, which is every real desk.
A cheap unprotected power strip solves the outlet count for a few dollars but does nothing about surges. Read the box: if it lists no joule rating, it is a plain extension strip with a circuit breaker for overloads, not a surge protector. It passes a voltage spike straight to your monitor. Disqualified for any desk holding gear you care about.
A real surge protector lists a joule rating, usually 1000 to 4000 joules, and uses metal-oxide varistors to absorb spikes before they reach your gear. This is the floor for a desk. Its one limit is that the protection wears down over years of absorbing hits and eventually needs replacing. Not disqualified, just not forever.
A smart power strip adds app control and per-outlet on/off scheduling on top of surge protection, which is genuinely useful for killing standby draw or automating gear. The catch is that the cheaper smart strips carry weak joule ratings, so you trade protection for convenience. Disqualified only if you bought it expecting heavy-duty protection it does not have.
The Specs That Actually Matter#
Joule Rating for Surge Protection#
The joule rating is how much energy the strip can absorb before its protection is used up, and it is the number that decides whether your gear lives. Below about 1000 joules you have token protection suited to a lamp, not a desk. For a monitor, a laptop, and a dock, 1000 to 2000 joules is the practical floor. For a multi-monitor workstation or anything with a desktop PC, look for 2000 to 4000 joules or more so the strip has headroom to take repeated hits over its life. If you are protecting a full setup, get a unit rated at least 2000 joules.
Outlet Count and Spacing for Wall-Wart Bricks#
Count your plugs, then count again, because the chargers and adapters with fat bricks eat two slots each by covering the neighbor. A desk usually lands at six to eight devices, and half of them are wall-warts. The fix is spacing: look for strips with widely spaced outlets or rotated and side-mounted sockets so a brick does not block the outlet next to it. A 12-outlet strip where bricks waste half the sockets gives you less usable capacity than an 8-outlet strip designed for them. If you run several power bricks, get a strip with wide or rotated outlet spacing.
Built-in USB-A and USB-C and Wattage#
Built-in USB ports save you a fistful of separate chargers, but the wattage decides what they can actually feed. A 5W USB-A port trickle-charges a phone and nothing more. A modern USB-C Power Delivery port at 20W to 30W charges a phone fast or runs a tablet, and a 45W to 65W port can top up a small laptop. Check the per-port and total wattage, since a strip rated 30W total splits that across every USB port at once. If you want to ditch loose chargers, get a strip with a USB-C PD port of at least 30W.
Cord Length and Safety Certification#
The cord has to reach the wall without strain, so measure the run before you buy; a 4-foot cord that needs to be 6 feet forces a daisy chain, which is a fire risk. Most desks want 6 to 8 feet. Then confirm the safety mark: a genuine UL listing (or ETL, which tests to the same UL standard) means the unit passed independent safety testing, and its absence on a no-name strip is a real red flag. If the cord is too short or there is no UL or ETL mark, get a different unit.
Our Top Picks#
For most desks, the Anker 351 is the right default. It pairs a solid joule rating with a thoughtful mix of widely spaced AC outlets plus built-in USB-A and USB-C, so it covers your monitor, charger, and phone off one cord without a tangle of bricks fighting for space.
Anker 351 Power Strip
Editor’s ChoiceThe Anker 351 packs 12 AC outlets plus 20W USB-C fast charging into a flat-plug design with 2100J surge protection, TÜV listing, and a $200,000 connected-equipment warranty.
If you want real surge protection without spending much, the HANYCONY strip is the value pick. At well under fifteen dollars it still carries a proper joule rating and a generous outlet count with USB ports, which is the cheapest honest path to actually protecting your gear rather than just powering it.
HANYCONY Surge Protector Power Strip
Best ValueA best-value surge strip with 8 widely-spaced outlets, 2 USB-C + 2 USB-A ports, a 5ft braided flat-plug cord, and ETL certification — the highest-reviewed pick on the list.
When protection is the whole point, the Belkin SurgeMaster is the one to buy. Twelve outlets and a high joule rating give it the headroom to guard a full multi-monitor workstation, and Belkin backs its surge units with a connected-equipment warranty, which tells you they trust the clamping.
Belkin SurgeMaster 12-Outlet
A 12-outlet surge protector with 8 rotating/pivoting outlets for bulky chargers, 4,320J of protection, an 8ft flat-pivot cord, and a $300,000 connected-equipment warranty.
If you want to automate or remotely cut power, the Kasa HS300 is the smart pick. Each of its six outlets switches independently from the app, so you can schedule gear, kill standby draw, and monitor energy use per outlet. Treat its protection as basic and pair it with a real surge unit upstream if you need both.
Kasa Smart Power Strip HS300
A Wi-Fi smart strip with 6 individually controlled outlets, energy monitoring, and 3 USB ports — works with Alexa and Google Home, ETL-certified surge protection, no hub required.
For gear you absolutely cannot risk, the Tripp Lite ISOBAR8ULTRA is the heavy-duty choice. Its isolated filter banks keep noisy devices from feeding interference into sensitive ones, and the joule rating and build are built for audio, lab, or workstation use where clean, protected power earns its higher price.
Tripp Lite ISOBAR8ULTRA
A heavy-duty all-metal surge protector with 3,840J network-grade protection, 4 isolated filter banks that block EMI/RFI noise, a 12ft cord, lifetime warranty, and $50,000 equipment insurance.
Surge Protector vs Smart Strip vs Basic Strip#
Pick a basic strip only if you are powering things that do not matter, like a lamp or a fan, and you just need more outlets cheaply. Pick a surge protector for any desk holding a monitor, computer, or dock, because the joule rating is the only thing that saves that gear from a spike, and a good one costs about the same as a basic strip anyway. Pick a smart strip when you want to schedule outlets, cut standby power, or control gear remotely, but check its joule rating first, since the convenience often comes with weaker protection than a dedicated surge unit. Many people end up with a surge protector as the base and one smart strip for the gear they want to automate.
Frequently Asked Questions#
What joule rating do I need?#
It depends on what you are protecting. For a single monitor, a laptop, and a charger, 1000 to 2000 joules is the working floor. For a multi-monitor setup or a desktop PC, aim for 2000 to 4000 joules or higher so the unit has headroom to absorb repeated spikes over years of use. Anything rated under 1000 joules is suited to a lamp, not a desk full of electronics.
Do surge protectors wear out?#
Yes. The metal-oxide varistors that absorb spikes degrade a little with every hit, so protection drops over time even though the outlets keep working. A unit that has taken a major surge or that is several years old may have little protection left while still powering your gear normally. Many strips have an indicator light that warns when protection has failed; if there is no light, plan to replace a heavily used surge protector every few years.
Are smart power strips safe?#
A smart strip from a reputable brand with a UL or ETL listing is safe to use, and the app control adds no real risk. The thing to watch is protection, not safety: cheaper smart strips often carry low joule ratings, so they power and automate your gear well but guard it poorly. If a smart strip is your only line of defense, confirm its joule rating, or run it downstream of a dedicated surge protector.
What is the difference between a power strip and a surge protector?#
A power strip just multiplies outlets and includes a circuit breaker for overloads; it passes a voltage spike straight through to whatever is plugged in. A surge protector adds components that clamp and absorb spikes, and it lists a joule rating to prove it. If the box shows no joule rating, you are holding a plain power strip no matter what the front label says.
The Verdict#
For most desks the Anker 351 is the right default: it protects your gear, spaces its outlets for fat bricks, and folds in USB-A and USB-C so you can retire a couple of loose chargers, all for under thirty dollars. Deviate if you are guarding a full workstation, where the Belkin SurgeMaster's twelve outlets and higher joule headroom earn the upgrade; if you want app scheduling and per-outlet control, where the Kasa HS300 fits; or if you run sensitive audio or lab gear, where the Tripp Lite ISOBAR8ULTRA's isolated filtering is worth the price. The honest tradeoff: surge protection is not permanent, so even the best unit here wears down with every spike it eats and will eventually need replacing, which is the one cost no power strip can design away.
For a closer look at individual units, see our power strip reviews. To tame the cable mess a strip full of bricks creates, browse our cable management reviews, and for a full plan on hiding the wiring behind your desk, read the cable management guide.