This article covers MSI Optix MAG281URF ゲーミングモニター RAPID IPSパネル スリムベゼル 4K UHD.

Overview

The MSI Optix MAG281URF is a 27.9-inch 4K UHD (3840×2160) gaming monitor with a 144Hz refresh rate and 1ms GTG response time, powered by a RAPID IPS panel. It also supports DisplayHDR 400 for improved contrast and brightness. A standout feature is the built-in KVM switch, which lets you control two PCs with a single keyboard and mouse while switching between them on the same display. Combined with its USB hub functionality, this monitor is an excellent choice for multi-PC setups.

Connectivity & Compatibility

Video inputs include two HDMI 2.1 ports and one DisplayPort 1.4a. HDMI 2.1 supports 4K/120Hz from next-gen consoles. The KVM switch uses two USB-B upstream ports and two USB-A downstream ports, allowing seamless peripheral switching between two connected computers. VESA mount compatible (100×100mm) for monitor arms. G-Sync Compatible certified for variable refresh rate with NVIDIA GPUs.

Product Info

Released in early 2023, the MSI Optix MAG281URF originally retailed around ¥80,000 but can now be found for approximately ¥40,000 on . The manufacturer provides a 3-year warranty. Included accessories: power adapter, HDMI cable, DisplayPort cable, USB upstream cable, and quick start guide. This monitor sits in the mid-to-high-end gaming segment. It combines 4K/144Hz performance with practical features like a KVM switch and USB hub, making it suitable for gaming, creative work, and multi-PC environments.

Best Use Cases

Users who switch between a gaming PC and a work PC on the same desk. The built-in KVM switch automatically swaps keyboard and mouse along with the video input, saving time and clutter. Gamers who want 4K resolution for PC titles and consoles (PS5, Xbox Series X). HDMI 2.1 ensures full 4K/120Hz support. * Creative professionals who need accurate colors. The monitor covers 99% sRGB and 95.38% DCI-P3, and includes a hardware blue-light filter for long editing sessions. ## Alternatives
Competitors in the same price range include the ASUS TUF Gaming VG28UQL1A (4K/144Hz, HDMI 2.1, no KVM) and the Dell S2722QC (4K/60Hz, USB-C power delivery, no KVM). The MSI Optix MAG281URF stands out with its integrated KVM switch, making it the better choice for multi-PC setups. However, the Dell S2722QC offers USB-C power delivery, which is more convenient for laptop users.

Things to Consider

The KVM function requires USB-B connections to each PC in addition to the video cables. Switching is automatic but can be manually controlled. No built-in speakers; external audio is required. To achieve 4K/144Hz, your GPU must support DisplayPort 1.4 or HDMI 2.1. Older GPUs may limit refresh rate. The monitor weighs about 7.7 kg, so check the load capacity of any monitor arm you plan to use.

Product Disclosure (Amazon)

  • Manufacturer: 東芝(TOSHIBA)
  • Seller: world trade shop
  • Fulfilled by: world trade shop
  • ASIN: B099PC1CDN
  • Note: This article covers a manufacturer-made product based on Amazon listing details.