This article covers ASUS ゲーミングモニター ROG Strix XG259CS-J (24.5インチ.

Overview

The ASUS ROG Strix XG259CS-J is a 24.5-inch Fast IPS gaming monitor with Full HD resolution and a 180Hz refresh rate. Its 1ms GTG response time makes it an excellent match for fast-paced competitive gaming. The inclusion of a USB-C port with DisplayPort Alt Mode and 7.5W power delivery makes it equally convenient for laptop users who want a clean, single-cable desktop setup.

Connectivity & Compatibility

On the connectivity side, you get one DisplayPort 1.4 (HBR2), one HDMI 2.0, and one USB-C supporting DP Alt Mode. A 3.5mm headphone jack is also available. All inputs are easily accessible on the back panel. The monitor supports VESA 100x100mm mounting, so aftermarket arms or wall brackets are fully compatible. Keep in mind that the USB-C port only delivers 7.5W of power, which is enough to maintain battery during office work but insufficient for high-wattage gaming laptops under load.

Product Info

Launched in late 2023, the XG259CS-J sits at the sweet spot between entry-level and mid-range gaming monitors. Its key selling point is the combination of Fast IPS panel technology, 180Hz refresh rate, and a sub-¥20,300 price point (as of September 2026). ASUS backs the monitor with a 3-year Japan domestic warranty. The package includes a DisplayPort cable, power adapter, power cord, quick-start guide, ROG pouch, ROG sticker, and warranty card.

Best Use Cases

First and foremost, competitive gamers. Whether you’re playing Overwatch 2, Valorant, or Apex Legends, the 180Hz refresh rate and quick 1ms GTG response provide a noticeable edge. The monitor is less suitable for creative professionals who need DCI-P3 wide color gamut or 4K resolution.
Second, remote workers or students who use a USB-C laptop as their primary machine. You can charge and output video through the same cable, reducing desk clutter. However, the 7.5W PD is not enough to keep a high-performance gaming laptop fully charged during demanding tasks.
Third, users with limited desk space. The 24.5-inch size is still generous for gaming, yet the stand offers height, tilt, swivel, and pivot adjustments, making it easier to fit into tight corners or multi-monitor setups.

Product Disclosure (Amazon)

  • Manufacturer: ASUS
  • Seller: 【迅速・丁寧】オンラインストアすみれ堂
  • Fulfilled by: 【迅速・丁寧】オンラインストアすみれ堂
  • ASIN: B08HYH95Z8
  • Note: This article covers a manufacturer-made product based on Amazon listing details.