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ASUS announced the ROG Keris II Ace at CES on January 9, 2024. It is a 54-gram, right-handed ergonomic mouse with a 42,000-DPI ROG AimPoint Pro sensor, optical main switches, and wired, 2.4GHz, and Bluetooth 5.1 connectivity. The headline needs one important correction: on ASUS’s US specification, polling reaches 8,000 Hz over USB and 4,000 Hz over 2.4GHz wireless, and both modes above 2,000 Hz require the included ROG Polling Rate Booster. ASUS’s US page showed $159.99 pricing and a displayed $134.99 promotion in an August 16, 2026 snapshot; price and stock can change.
ROG Keris II Ace specifications
| Feature | ASUS-listed specification |
|---|---|
| Weight | 54 g, excluding dongle |
| Dimensions | 121 × 67 × 42 mm |
| Sensor | ROG AimPoint Pro optical sensor |
| Maximum resolution | 42,000 DPI |
| Tracking and acceleration | Up to 750 IPS and 50G |
| Main switches | ROG 100M Optical Micro Switch, rated for 100 million clicks |
| Connections | USB, 2.4GHz RF, Bluetooth 5.1 |
| Battery claim | Up to 107 hours in 2.4GHz mode without lighting |
| Polling | Up to 8,000 Hz wired and 4,000 Hz wireless with the booster on the US listing |
| Cable | 2-meter ROG Paracord |
| Software and OS | Armoury Crate; Windows 10 and Windows 11 |
These figures come from ASUS’s US specification page. ASUS also lists less than 1% DPI deviation and track-on-glass capability. Those are manufacturer claims, not independent test results.
What “8K polling” means here
Polling rate is how often the mouse reports its position to the computer. At 1,000 Hz, a report arrives about every 1 millisecond; 4,000 Hz is about every 0.25 ms; 8,000 Hz is about every 0.125 ms.
The Keris II Ace does not run at 8,000 Hz by default. ASUS says the ROG Polling Rate Booster is required above 2,000 Hz. Its launch announcement describes a rise from the standard 1,000 Hz to as much as 4,000 Hz wirelessly or 8,000 Hz when wired. The booster is included in the listed US package.
#1 Best Overall
- Pro-Tested 54g Ultralight, Ergo Design: Ergonomic lightweight gaming mouse co-developed with professional esports FPS players for peak comfort, control, and speed during long gaming sessions
- Tri-Mode Connectivity with ROG SpeedNova Wireless: Connect via low-latency 2.4 GHz RF, Bluetooth, or USB-C wired mode. Compatible with the ROG Omni Receiver for seamless multi-device pairing
- ROG AimPoint Pro 42K Sensor: Industry-leading 42,000 DPI optical sensor with <1% CPI deviation and track-on-glass capability for precision on nearly any surface
- ROG Optical Micro Switches: Reliable switches rated for 100 million clicks, offering consistent, instant actuation and eliminating double-click issues for competitive play
- Premium Components & Onboard Control: Features lightweight ROG Paracord, 100% PTFE mouse feet for smooth glides, and onboard settings control for sensitivity, polling rate, and lighting
Higher polling can increase USB and CPU workload and may reduce battery life. Whether it feels useful depends on the game, display refresh rate, frame-time consistency, and sensitivity. Start at 1,000 Hz, then test 2,000, 4,000, or 8,000 Hz while watching frame times and battery drain. A high number alone does not improve aim.
Regional wording is inconsistent. The ASUS Canada page uses different 8K wording, while the current US listing specifies 8K wired and 4K wireless. Buyers should check the documentation for their market rather than assume the mouse is an 8K wireless model.
Shape, weight and ergonomics
The Keris II Ace is a right-handed ergonomic mouse measuring 121 × 67 × 42 mm. ASUS says the shape was developed with esports professionals and supports palm, claw, and fingertip grips. At 54 g, it should require less effort for broad swipes than a heavier mouse, although some players prefer added mass for stability.
Rank #2
- CARBON FIBER STRUCTURE - Precision engineered carbon fiber shell that keeps weight down to a minimum
- PRO-TESTED, 47-GRAM DESIGN - Mouse shape co-developed with esports professionals to ensure stability and control when flicking and tracking
- ROG POLLING RATE BOOSTER - Up to a true 8000 Hz wireless polling rate for increased wireless responsiveness
- ROG AIMPOINT PRO OPTICAL SENSOR - 42,000 dpi for precision accuracy and track-on-glass technology
- ROG OPTICAL MICRO SWITCHES - Crisp and instant actuation with a 100-million-click lifespan
It is not ambidextrous, so left-handed users need another design. Dimensions matter more than the DPI ceiling: compare them with your current mouse and consider where your thumb, ring finger, and palm rest. The box includes grip tape and two replacement mouse feet.
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USB wired
USB provides the listed maximum 8,000-Hz polling mode and charges the mouse through the included USB-C-to-USB-A cable. Competitive players can use it when they want the highest reporting rate without relying on battery power.
2.4GHz wireless
ROG SpeedNova powers the low-latency RF connection. The US specification lists up to 4,000 Hz with the booster. For serious competitive play, this is the practical wireless mode to evaluate rather than Bluetooth.
Rank #3
- Built for Esports Gamers: Co-developed with professional FPS players. Its semi-symmetrical form factor is optimal for claw grip types, making it the perfect wireless mouse for competitive gaming on desktop or laptop setups
- Aim Labs Setting Optimizer: Synergistic software analyzes user strengths, habits, and play styles to tailor mouse settings for optimal gameplay by suggesting - Mouse DPI, Angle Tuning, and Lift-off Distance
- Professional-Grade Precision: The 36,000-dpi ROG AimPoint optical sensor features an industry-leading < 1% cpi deviation, enabling ultimate speed and accuracy in competitive gaming and precise work
- NVIDIAReflex: Officially verified for NVIDIA Reflex Latency Analyzer to monitor mouse responsiveness
- Tri-Mode & Multiple Device Connectivity: Enjoy unmatched flexibility with wired USB (Type-C to Type-A), low-latency 2.4 GHz RF, and Bluetooth pairing for up to three devices. In 2.4 GHz RF mode, the ROG Omni Receiver links multiple supported devices through a single receiver, with ROG SpeedNova wireless technology ensuring ultra-low latency, reliable performance, and optimized power efficiency
Bluetooth 5.1
Bluetooth is the convenience option for laptops and multiple devices. ASUS says it can pair with up to three devices. That does not mean three simultaneous gaming connections or equal performance to 2.4GHz RF. The ROG Omni Receiver can share one receiver with compatible ROG devices; compatibility must be checked for the specific peripherals.
ASUS rates battery life at up to 107 hours in 2.4GHz mode with lighting disabled. Polling rate, RGB, wireless mode, firmware, usage, and battery age can all change the result, so do not treat 107 hours as a 4K-with-lighting guarantee.
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The ROG AimPoint Pro is specified at up to 42,000 DPI, 750 IPS, and 50G. Most FPS players use far less than 42,000 DPI; sensitivity, control, surface, shape, and sensor consistency matter more than the maximum setting.
Rank #4
- Built for Esports Gamers: Co-developed with professional FPS players. Its semi-symmetrical form factor is optimal for claw grip types, making it the perfect wireless mouse for competitive gaming on desktop or laptop setups
- Aim Labs Setting Optimizer: Synergistic software analyzes user strengths, habits, and play styles to tailor mouse settings for optimal gameplay by suggesting - Mouse DPI, Angle Tuning, and Lift-off Distance
- Professional-Grade Precision: The 36,000-dpi ROG AimPoint optical sensor features an industry-leading < 1% cpi deviation, enabling ultimate speed and accuracy in competitive gaming and precise work
- NVIDIAReflex: Officially verified for NVIDIA Reflex Latency Analyzer to monitor mouse responsiveness
- Tri-Mode & Multiple Device Connectivity: Enjoy unmatched flexibility with wired USB (Type-C to Type-A), low-latency 2.4 GHz RF, and Bluetooth pairing for up to three devices. In 2.4 GHz RF mode, the ROG Omni Receiver links multiple supported devices through a single receiver, with ROG SpeedNova wireless technology ensuring ultra-low latency, reliable performance, and optimized power efficiency
ROG Optical Micro Switches carry ASUS’s 100-million-click rating, and ASUS says switches are sorted within a 5-gram-force deviation range for more consistent left and right clicks. That is a manufacturer durability rating, not a promise that every unit will reach the figure. Optical actuation may appeal to buyers concerned about traditional switch debounce, while click feel remains subjective.
Armoury Crate is used for configuration. Depending on the current software and firmware, it can provide DPI stages, polling selection, button assignments, lighting, surface calibration, profiles, onboard settings, and firmware updates. Menu names and supported onboard controls can change, so verify the current version before relying on a particular shortcut. Scroll-wheel lighting supports Aura Sync.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What is included
- ROG Keris II Ace mouse
- ROG Polling Rate Booster
- Wireless receiver and USB dongle extender
- Mouse grip-tape set
- Two replacement mouse feet
- 2-meter ROG Paracord cable
- Warranty booklet, Quick Start Guide, ROG sticker, and thank-you card
This package description applies to the listed US configuration; do not assume another Keris model, including the separate Keris II Origin, has the same switches, weight, lighting, or polling accessory.
Price and availability
ASUS’s US product page showed a regular price of $159.99 and a displayed promotional price of $134.99 in an August 16, 2026 snapshot. The lower figure is a dated promotion, not a permanent price. ASUS notes that reseller pricing, offers, specifications, and market availability can vary. Check the US buying page immediately before ordering.
Who should buy the Keris II Ace?
It makes sense for
- Right-handed players who want a lightweight ergonomic shape
- Buyers needing wired, RF wireless, and Bluetooth options
- ROG users who can use the Omni Receiver with compatible devices
- Players interested in high polling and willing to test its system impact
- Anyone who values included grip tape, replacement feet, and the Polling Rate Booster
Think twice if
- You are left-handed or want a symmetrical mouse
- You will stay at 1,000 Hz and do not need the premium accessory bundle
- You dislike Armoury Crate or want a minimal configuration utility
- You are buying primarily for the 42,000-DPI headline
- You expect independent proof of latency, tracking, scroll-wheel durability, or build quality from the manufacturer specifications alone
Verdict
The ROG Keris II Ace is most compelling when its right-handed shape fits your hand and the included booster has a real use in your setup. Its meaningful advantages are the 54-gram body, three connection modes, optical switches, claimed 107-hour 2.4GHz battery life, and bundled high-polling hardware—not the largely theoretical 42,000-DPI ceiling. Treat “8K” as an up-to-8,000-Hz wired claim for the US model, with up to 4,000 Hz wireless, and make the buying decision around fit, software tolerance, and price.
Quick Recap
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.
