# SayoDevice O3C — Compact 3-key keyboard for rhythm gaming

> 高速トリガー SayoDevice O3C キーボード ホットスワップ対応ホール磁気リニアスイッチ ジオメトリ Dash OSU リズムゲーム用 summary. SayoDevice O3C mini keyboard with 3 Hall-effect magnetic switches for OSU! gaming.

Tags: keyboard, sayodevice, o3c, magnetic-switch, mini-keyboard, osu
Source: https://www.amazon.co.jp/dp/B0C3YYDY8R
Article page: https://web-autoai.com/articles/sayodevice-o3c-dash-osu?lang=en

Prices and ratings change over time — check the article page for the current values.

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## Overview
The SayoDevice O3C is a compact 3-key mini keyboard designed primarily for the rhythm game OSU! . It utilizes Hall-effect magnetic linear switches for fast and precise actuation, supporting an 8000 Hz polling rate for near-instantaneous response. A 0.95-inch IPS color screen and a customizable rotary knob provide at-a-glance information and intuitive control. Its small footprint makes it ideal for gamers who want a dedicated input device without taking up excessive desk space.

## Connectivity & Compatibility
Connectivity is via USB-C, operating as a USB 2.0 device. It works with Windows PCs and laptops out of the box. If your system only has USB-A ports, you will need a USB-C to A adapter or cable (not included). The bottom of the unit features a cable routing groove for tidy cable management. The hot-swap socket supports any compatible Hall-effect magnetic switches, allowing you to customize the feel and actuation point to your liking.

## Product Info
It sits in the entry-to-mid-tier segment, offering specialized hardware for rhythm game enthusiasts that a full-size keyboard cannot replicate. The package includes a USB-C cable and a switch puller tool.

## Best Use Cases
* OSU! gamers: The three-key layout is tailored for OSU! gameplay, reducing accidental keystrokes and enabling faster, more accurate inputs.
* Customization enthusiasts: Hot-swappable magnetic switches, a programmable screen, and a configurable knob let you fine-tune the keyboard to your preferences.
* Travel and limited-space setups: Its ultra-compact design is easily portable, perfect for LAN parties, gaming cafes, or small desks.
* Not suitable for general typing or games requiring many keys; it is a dedicated peripheral for specific use cases.

### Product Disclosure (Amazon)
- Manufacturer: BTXETUEL
- Seller: Newhui
- Fulfilled by: Amazon
- ASIN: B0C3YYDY8R
- Note: This article covers a manufacturer-made product based on Amazon listing details.