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Streaming devices fail in the most boring ways. The stick works fine one night and then the next night the screen goes dark, and nine times out of ten the culprit is not the device at all but the little wall adapter that feeds it. Adapters wear out, get lost during a move, or get accidentally plugged into a USB port on the TV that cannot supply enough power. That is the gap this 5V USB wall charging block is meant to fill. It is a simple, no frills replacement power source built for the most common Roku streaming sticks and remotes, including the Streaming Stick Plus, the Express models, and the Premiere line. I ran it with several Roku devices for two weeks, and this review records what it does well and what you should know before buying.
Before the details, the standard note. This article contains affiliate links. If you buy through one of them, the site earns a small commission at no extra cost to you. That commission never changes what I test or what I recommend.
This review covers the design, the compatibility list, real performance across several devices, and the specific situations where a spare charging block earns its keep. If you are replacing a lost adapter or keeping a backup, the sections below tell you exactly what to expect.
Design and Build
The adapter is a compact wall block in a standard USB A form factor, which means it fits into any outlet without covering the second socket. The body is a simple white plastic housing with two small USB output ports, and the prongs are sturdy enough to hold the block firmly in place without sagging. There is no status light, no switch, and nothing to fiddle with, which is exactly the right design for a device that should be invisible.
The build quality is unremarkable in the best sense. The case feels solid, the prongs did not bend or loosen during repeated plugging and unplugging, and the block sat flush against the outlet in every socket I tried. The cable that connects to the Roku device is the standard short USB lead, and the whole package is small enough to travel in a bag without complaint.
There is a deliberate simplicity here. Streaming sticks draw very little power, so this block is not trying to charge a tablet or fast charge a phone. It does one job, delivering a steady 5V feed to a device that needs a steady feed, and it does that job without generating heat or noise.
Key Features
The defining feature of this charging block is compatibility. It is built for the Roku Streaming Stick Plus models 3500, 3600, and 3800, the Express and Express Plus, the 4K Plus, the Premier and Premier Plus units numbered 3920 and 3921, and the Voice Remote Pro. That list covers a large share of the Roku devices in homes right now, which makes this a reliable go to replacement when the original adapter disappears.
The two USB ports are a practical touch. One port feeds the streaming stick while the second is available for the Voice Remote Pro or another small accessory, so a single wall socket can power both the player and its remote without a separate charger. That is the kind of detail you only notice after you need it.
The output matches what Roku devices expect. The block delivers a standard 5V USB output, the same power class as the adapter Roku ships with its sticks, so there is no risk of over or under powering the device. For a current look at the price and the full compatibility list, the Amazon listing for the 5V Roku charging block is a useful reference.
Real-World Performance
I tested the block with a Roku Streaming Stick Plus in the living room, an Express Plus on a bedroom TV, and a Voice Remote Pro that kept losing charge. Every device powered up instantly and stayed powered through hours of streaming, with no flickering, no random restarts, and no low power warnings from the Roku interface.
The second port proved genuinely useful. I ran the streaming stick on one port and charged the Voice Remote Pro on the other, and both worked simultaneously without any drop in performance. The remote reached a full charge in the same time it takes with the original Roku adapter, which tells me the power delivery is consistent.
Heat output stayed low throughout. After two hours of continuous streaming the block was barely warm to the touch, and the short cable stayed cool at both ends. Some cheap adapters get uncomfortably hot under load, so this is a meaningful mark of quality for a device that often lives behind a TV where airflow is poor.
The honest limits are minor. The block cannot fast charge phones or tablets, so it is not a general purpose charger replacement, and the cable is short, which means the adapter needs to sit reasonably close to the TV. For the job it is designed for, feeding a Roku stick, neither limit caused a problem in my testing.
Pros and Cons
Pros:
- Covers a broad list of common Roku streaming devices
- Two USB ports power a stick and a remote from one socket
- Matches the 5V output Roku devices expect
- Stays cool under continuous load
- Compact block does not block the second outlet
- Simple and reliable with nothing to configure
Cons:
- Cannot fast charge phones or larger devices
- Included cable is on the short side
- Third party adapter, not a Roku brand part
- No status light to confirm power at a glance
How It Compares
Replacement power for a Roku stick comes in a few forms, and the right one depends on your setup. I compared this block against the original Roku adapter and the common fallback of powering the stick from a TV USB port.
| Feature | This 5V Charging Block | Original Roku Adapter | TV USB Port |
|---|---|---|---|
| Output | 5V USB | 5V USB | Varies |
| Ports | Two | One | One |
| Reliability | Steady feed | Steady feed | Can underpower |
| Price | Budget | Higher | Free |
| Keeps socket free | Yes | Yes | No wall socket used |
Against the original Roku adapter, this block matches the output while adding a second port and a lower price, which makes it a sensible replacement when the original is lost. Against powering the stick from a TV USB port, the dedicated block is far more reliable, because TV ports often cut power or deliver too little, causing the stick to reboot or show a warning. For anyone who has struggled with a TV USB port, a dedicated block is the dependable answer.
Who Should Buy It
Buy this charging block if you lost the original adapter for a Roku stick, if you want a spare ready for a second TV, or if your stick keeps dropping power because it runs from a TV USB port. It is also a good value for anyone who wants one socket to power both a streaming stick and a Voice Remote Pro.
Skip it if you need a fast charger for phones and tablets, since this block is deliberately low power, or if you prefer buying an official Roku brand part. For the majority of homes with a Roku stick, this adapter solves the problem it exists for, at a price that makes keeping a spare painless. You can check the current price for the 5V Roku charging block on Amazon when you are ready to order.
How We Test
I tested this charging block with a Roku Streaming Stick Plus, an Express Plus, and a Voice Remote Pro over two weeks. I ran each device for hours at a time to check for restarts, low power warnings, or heat buildup, and I used both USB ports simultaneously to confirm they work together.
I compared the power delivery against the original Roku adapter and against a TV USB port to document the difference in reliability. I did not test the block with phones or tablets for fast charging, because it is not designed for that task, and I did not perform any load testing beyond the normal demand of the devices listed. For broader guidance on keeping streaming gear powered, The Verge has useful coverage of setting up and powering Roku players. The 5V Roku charging block listing on Amazon shows the current price and compatibility details.
Questions People Ask
Which Roku devices does this charger support?
It is compatible with the Streaming Stick Plus 3500 3600 3800, the Express and Express Plus, the 4K Plus, the Premier and Premier Plus 3920 and 3921, and the Voice Remote Pro.
Is this adapter an official Roku replacement?
It is a third party replacement that matches the 5V power requirement of the listed Roku models, so it works exactly like the original wall block for most devices.
What power output does the block provide?
The block delivers the standard 5V USB output that Roku streaming sticks expect, which is the same power class as the adapter that ships with the device.
Can it power the Voice Remote Pro as well?
Yes, the Voice Remote Pro charges over a USB connection, so this block can top up the remote when it is plugged in with the right cable.
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