The SteelSeries Aerox 9 Wireless is a lightweight MMO/MOBA gaming mouse. Its body has diamond-shaped cutouts to reduce its overall weight, a dedicated CPI button behind the scroll wheel, and a 12-button side panel on the left. It has the same sensor and identical, right-handed shape as the SteelSeries Aerox 5 Wireless, a multi-genre model with fewer side buttons but very similar performance. This mouse connects wirelessly with a USB receiver or Bluetooth and recharges with an included cable.
Our Verdict
The SteelSeries Aerox 9 Wireless is a great mouse for office and multimedia work. You can reprogram any of the buttons to perform macros or a variety of productivity commands. It feels very sturdily built and has a comfortable, right-handed shape suitable for most hand sizes. It also connects wirelessly via a USB receiver or Bluetooth. Unfortunately, while its scroll wheel has L/R tilt buttons, it lacks a free-scrolling mode.
- Feels very well-built.
- You can program all buttons using the customization software.
- Connects wirelessly with a USB receiver or via Bluetooth.
- Shape isn't suitable for small hands.
- Scroll wheel lacks a free-scrolling mode.
- Bulky; isn't designed to be slipped into laptop bags or cases.
The SteelSeries Aerox 9 Wireless is a very good mouse for FPS and Battle Royale games. It's lightweight compared to similar models with 12-button side panels, and the build quality feels excellent. Performance-wise, you can set your CPI precisely within a broad range, and the minimum lift-off distance is very low. Unfortunately, while the click latency is very good, it isn't as low as some similarly-priced options.
- Feels very well-built.
- Lightweight.
- Very good click latency.
- Connects wirelessly with a USB receiver or via Bluetooth.
- Shape isn't suitable for small hands.
- Bulky; isn't designed to be slipped into laptop bags or cases.
The SteelSeries Aerox 9 Wireless is an excellent MMO gaming mouse. It has a full 12-button side panel, and you can reprogram all buttons using the customization software, which is compatible with Windows and macOS. The build quality feels excellent, and it has a comfortable, right-handed shape. Unfortunately, it isn't well-suited for small hands using any grip type.
- Feels very well-built.
- Very good click latency.
- You can program all buttons using the customization software.
- Connects wirelessly with a USB receiver or via Bluetooth.
- Shape isn't suitable for small hands.
- Bulky; isn't designed to be slipped into laptop bags or cases.
- Feels very well-built.
- Connects wirelessly with a USB receiver or via Bluetooth.
- Bulky; isn't designed to be slipped into laptop bags or cases.
Changelog
- Updated Mar 10, 2026: We've converted this review to Test Bench 1.5.2. This update removes the Delay To Start Of Movement and Delay To End Of Movement measurements from the Sensor Latency test. See our full 1.5.2 changelog for details.
- Updated Aug 19, 2025: We've converted this review to Test Bench 1.5.1. This update removes less relevant or redundant elements, including several videos. We've also adjusted our Sensor Latency testing, resulting in minor score changes. See our full 1.5.1 changelog for details.
- Updated Jan 05, 2024: We've updated the CPI graph displayed in the Sensor Latency section of this review. Our results remain the same, but these graphs have two new columns with results from the Delay At Half Movement and Delay To End Of Movement tests.
- Updated Dec 01, 2023: We've converted this review to Test Bench 1.5. This update adds a new Main Button test group, which provides button actuation data and switch information. We've also made minor changes to how we calculate the Office usage score. For more details, you can see our full changelog here.
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Differences Between Sizes And Variants
The SteelSeries Aerox 9 Wireless we tested is black. There are no other color variants. You can see the label for our unit here.
Popular Mouse Comparisons
The SteelSeries Aerox 9 Wireless is a lightweight, wireless gaming mouse designed for MOBA, MMO, and other complex games that need lots of button inputs. Unlike the Razer Naga Pro, the Corsair SCIMITAR RGB ELITE, and other MMO-focused gaming mice that have been popular in recent years, the overall design of this mouse emphasizes being as lightweight as possible.
For more recommendations, see our picks for the best MMO mice, the best gaming mice, and the best lightweight mice.
The SteelSeries Aerox 9 Wireless and the Razer Naga V2 HyperSpeed are wireless MMO gaming mice. The SteelSeries is significantly more lightweight and has a honeycomb body design. On the other hand, the Razer has a solid plastic shell and a few more programmable buttons. Its scroll wheel also has left- and right-tilt inputs and a free-scrolling mode. Unlike the SteelSeries, which has a rechargeable internal battery, the Razer uses AA batteries for power.
The Razer Naga V2 Pro and the SteelSeries Aerox 9 Wireless are wireless mice designed primarily for MMO gaming. The Razer has significantly better overall gaming performance and has three hot-swappable side panels with different button configurations. It also has a customizable scroll wheel and substantially longer battery life than the SteelSeries. On the other hand, the SteelSeries has a honeycomb body design and is significantly more lightweight.
The Razer Naga Pro and the SteelSeries Aerox 9 Wireless are both wireless MMO gaming mice. The Razer has two additional buttons, and you can adjust the CPI more precisely within a slightly wider range. It also has significantly lower click latency. On the other hand, the SteelSeries is significantly lighter, and its software is compatible with Windows and macOS, while the Razer software is only compatible with Windows.
The SteelSeries Aerox 5 Wireless and the SteelSeries Aerox 9 Wireless are visually similar mice from the same lineup. The Aerox 9 is designed primarily for playing MMO games and has a full 12-button side panel. It also feels slightly sturdier, and its mouse wheel has L/R tilt inputs. On the other hand, the Aerox 5 is designed to handle multiple gaming genres and has a more versatile set of side buttons.
Test Results
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