DROK USB to 12V Adapter

I picked up this DROK USB to 9 V/12 V step-up converter to power my TP-Link router (which requires a 9 V input) directly from a power bank when the grid goes down — and it works exactly as I hoped. Instead of scrambling for a wall outlet during power outages, I simply plug the USB end into my power bank, switch the converter to 9 V, and my router stays online. It’s been a reliable backup solution that keeps my Wi-Fi active when I need it most. ✔ What I liked • Reliable backup power: The converter consistently delivers stable 9 V output from a standard 5 V USB source, so my router stays connected through outages. This has given me peace of mind knowing my network won’t drop unexpectedly. • Easy plug-and-play setup: Just plug the USB end into a power bank, flip the converter to 9 V, and connect it to the router’s DC input. No additional adapters or complicated steps required — it works right away. • Clear voltage indicator: The built-in LED display shows the selected output voltage clearly, so I always know I’m supplying the correct power. • Compact and portable: It’s lightweight and small enough to stash with my emergency gear or travel kit, and the cable length is good for routing without strain. ⚠ What to know • The output tops out around 1 A at 9 V, so it’s important to make sure your device’s power draw stays within that range — in my case, the TP-Link router runs perfectly well on this. • Best suited as a backup or temporary power solution (e.g., during outages or when on the go), rather than a full-time substitute for a dedicated power supply. ⭐ Final Verdict This USB-boost converter is a simple, effective way to run a 9 V device from a USB power source like a power bank. It gave me exactly the backup power solution I needed to keep my router online during outages, and the easy setup with a clear voltage display makes it very user-friendly. ✔ Highly recommended if you want a reliable backup power option for routers and other small 9 V devices.

I like how it has an LCD screen that tells you if it's operating at 9 vs 12 volts. I use this to power a camera via a USB to DC power adapter to avoid having to drain the camera's stock batteries. I used to use a battery bank/power bank that had a dedicated DC out, but those are impossible to find these days. This adapter allows me to use regular power banks and step up the voltage to meet the needs of my camera without sacrificing too much power during the conversion. The only thing to note is that this has a hard time working in sub-freezing temperatures. Generally, it works well above 36 degrees Fahrenheit. If you intend to use this in colder temperatures, you may need to cover it with a hand warmer or keep it close to you inside a pocket to prevent the components from freezing.

Was looking to convert from a 5v power bank to 12 volts barrel jack for use with a 12 v 10 watt landscape LED light. Intended to be a bike light but ended up making a DIY emergency flood light. worked well beyond my expectations. Side note being it can go from 9v to 12v via a switch means the light now has a high and low mode which is awesome. however im pulling 12v .8A = 10 watt which is fine but tried on a 12v 1.5A = 18 watt and the wire kept tripping off so not sure what i was expecting. Overall was a Great buy.

Pretty cool. Take 5v USB in and get 9vdc or 12vdc out. I opened two of these, and reversed the polarity of the 9/12 for use with guitar/bass effects pedals.

Claims to work up to 1 amp, but doesn't get anywhere near this number. I was hoping to save myself the hassle of building the cable myself, but now I wasted my time, energy, and resources on a return. Don't let my mistake be yours as well. Don't buy this cable unless you only need a few watts of power.

It works fine, but be mindful of the amperage your device needs. I tried using it with my Vive Pro HMD, and it works for awhile, but the converter gets very hot and shuts down regularly under those conditions. As it turns out, the HMD was pulling almost twice the rated amperage, a dangerous situation. All converters like this one, converting 5v to 12v, are designed to take 5v, 2A as input. This is the common input from standard usb sockets. It maps to 12v, 0.833A per the conversation equation. That is fine for low-power devices, but the HMD I used it for pulls 1.5A. If you are looking for a higher power solution like the Vive Pro HMD, I suggest a power bank like the Anker PowerCore II 20000. Whatever you choose, don’t forget to consider the amperage of the cable, converter, or device.

Check carefully, the switch that changes from 9v to 12v sometimes doesn't work properly; I've had to return this product twice to get one that works correctly.

Works great. I use it to power a 9v TP link router with a USB power bank. And it's nice to know i can also use it for 12v if i ever need it.

Mobil internet modemim powerbanktan çalıştırmak istedim (gerçekten mobil olsun). Bir powerbank 5 volt veriyor ama modeme 12 lazım. Bu dönüştürücü ile yapabildim. Hem de powerbankın USB çıkış bu kablo modeme uygun bir giriş yaptı. Süper! Çok mutlu oldum!! :)

Ho provato il prodotto con un power banck spostando l'nterruttore di cambio voltaggio ma il il display segnava sempre 4,9 V

شغل راوتر 5G شغل كل الممودمات التي تقبل 12v للاسف حرق 2 رواتر كنت افكر المشكلة من الراوتر ولما ركبت الراوتر الثاني انحرق

What a fantastic product, now I can plug in and charge 9-12v electrical products from a usb port!.

الكابل معاه تحويله علشان يمشي مع غالب الراوتر انصح بهذا المنتج