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Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →The Smartmi P1 is a compact purifier rated by its manufacturer for rooms of 17.5–30 m², with a particle CADR of 250 m³/h. Those are manufacturer specifications, not independent performance results. There are two important qualifications before buying: the title’s model code, ZMKQJHQPII, is not reconciled with the variants in Smartmi’s manual, and Smartmi publishes conflicting noise ranges. The accessible CHOICE review page does not disclose its test scores, so it cannot establish how the P1 performs against other purifiers.
What the model code and review evidence establish
The exact string in the title, ZMKQJHQPII, does not match the identifiers in Smartmi’s manual, which lists ZMKQJHQP11 and ZMKQJHQP12. The available official material does not explain whether the title string is a transcription variant, a market-specific code or a different identifier. Check the label on the unit and confirm the filter compatibility for that exact product before ordering a replacement.
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CHOICE has a review page under the exact title, but its Expert Rating, detailed test results and measured noise are restricted to members. The accessible page therefore does not support an independent performance ranking or a claim that the P1 passed a particular test.
Smartmi P1 specifications, with source differences kept visible
The figures below are published specifications or claims, not independently verified results. The product page and manual differ on dimensions and noise, so their values should not be blended into a single specification.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
| Measure | Smartmi US product page | Smartmi manual | CHOICE listing |
|---|---|---|---|
| Particle CADR | 250 m³/h | 250 m³/h | Dust CADR claimed at 255 m³/h |
| Recommended area | 17.5–30 m² | 17.5–30 m² | Claimed room size 30 m² |
| Noise | 19–49 dB | 30–60 dB(A) | Measured noise is member-only |
| Dimensions | 220 × 362.5 mm | 220 × 360.5 mm | 36 × 22 × 22 cm |
| Weight | Approximately 3 kg | Approximately 3 kg | 3.2 kg |
| Power | 30 W rated power | 30 W rated power; 24 V rated voltage | |
| CADR by particle type | Pollen 150 cfm; dust 130 cfm; smoke 120 cfm | Pollen 150 cfm; dust 130 cfm; smoke 120 cfm |
The stated area range and CADR can help determine whether the P1 is a plausible size for a room, but they do not show how it will perform in a particular layout or under a particular pollution load. Smartmi also claims 99.97% capture of particles above 0.3 microns and 99.98% above 0.08 microns. Treat those as manufacturer claims; the accessible independent review information does not verify them.
Noise figures are not directly comparable
Smartmi’s product page gives a range of 19–49 dB, while its manual gives 30–60 dB(A). The sources do not explain the measurement conditions behind the discrepancy. Because the manual explicitly uses dB(A) and no common test conditions are provided, neither range should be treated as a definitive real-world noise measurement or used to claim a direct comparison with another purifier.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
Filter replacement and ongoing ownership
Smartmi recommends replacing the filter generally every 6–12 months. It says the interval depends on daily air conditions and may need to be shorter in homes with an open kitchen, multiple pets or indoor smoking. The manufacturer describes a P1 allergy-control replacement filter with a preliminary layer for larger particles, an H13 True HEPA layer and a pollen-focused layer; it also lists an odor-stop version.
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Smartmi’s filter page displayed a US$39 sale price and in-stock status when accessed on October 7, 2026. That is a time-sensitive US listing, not a durable price or proof of availability in other markets. Confirm the exact purifier variant and local filter listing before buying; the evidence available here does not establish a current compatible marketplace listing or local replacement-filter cost.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
App setup and smart-home compatibility
Smartmi lists support for Smartmi Link, Google Assistant, Alexa and Apple HomeKit. Its support instructions say the phone and purifier must be on the same 2.4 GHz Wi-Fi network during setup, and the app connection works only on 2.4 GHz. This is manufacturer guidance, not a hands-on connectivity test.
Availability depends on the market
CHOICE marks the reviewed model discontinued in Australia. Smartmi’s US product page still lists the P1, so the Australian status should not be generalized to every country. Check availability in your own market and verify that both the purifier’s model label and the replacement filter listing identify a compatible P1 variant.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Who should consider the Smartmi P1?
The P1 may suit someone seeking a compact purifier for a room within Smartmi’s stated 17.5–30 m² range who also wants the listed app and smart-home integrations. It is harder to recommend on the available evidence to someone prioritizing independently verified cleaning performance, a confidently established noise level, or a known local filter cost: the accessible review page withholds the relevant test details, and the manufacturer’s noise figures conflict.
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Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
