This article covers Intel Ethernet ネットワークアダプター I225-T1.
Overview
The Intel Ethernet Network Adapter I225-T1 is a single-port NIC that brings 2.5 Gigabit Ethernet connectivity to your desktop PC. Offering 2.5 times the bandwidth of traditional Gigabit Ethernet, it's an ideal upgrade for users who want to maximize their NAS performance or take full advantage of high-speed internet plans. Powered by the Intel I225-V controller, this adapter connects via a PCIe 3.0 x1 interface and supports 2.5GBASE-T over standard Cat5e or better twisted-pair cables. No need to rewire your home or office — just plug it in and enjoy faster transfers.
Connectivity & Compatibility
The I225-T1 uses a PCIe 3.0 x1 interface, compatible with any desktop motherboard that has an available PCIe slot. It will physically fit in PCIe 2.0 x1 slots as well, but bandwidth limitations may cap performance at 1 Gbps. For full 2.5 Gbps speeds, a PCIe 3.0 slot is recommended. Supported operating systems include Windows 10/11, Linux, and FreeBSD, with official Intel drivers readily available. Advanced features such as Wake-on-LAN, VLAN tagging, and Jumbo Frames (up to 9,000 bytes) are fully supported.
Product Info
The Intel Ethernet Network Adapter I225-T1 is a retail package product sold directly by Intel. On Japan, it typically retails for around ¥20,000, placing it in the mid-range NIC segment. Warranty is the standard 3 years from Intel (proof of purchase required). The package includes a low-profile bracket and a quick installation guide; drivers must be downloaded from Intel's official website. Market positioning: Among 2.5GbE NICs, the I225-T1 is one of the most reliable and compatible options in the entry-to-mid tier. Compared to Realtek-based alternatives at similar prices, it offers superior stability and driver support.
Best Use Cases
NAS Users: If you run a home or small office NAS and find 1 Gbps limiting, the I225-T1 provides a cost-effective upgrade to 2.5 Gbps. Large file transfers, backups, and media streaming become noticeably faster. However, your NAS must also support 2.5GbE. Content Creators & Video Editors: When collaborating on 4K/8K footage over a network, 2.5 Gbps bandwidth reduces transfer bottlenecks. Ideal for shared storage environments. Not suitable for those who need 10 Gbps for professional workflows. Gamers: While online gaming latency won't see dramatic improvements, game downloads and updates will complete faster. Benefit is limited unless your internet connection exceeds 1 Gbps. Home Lab Enthusiasts: For those building home servers, routers, or experimenting with network configurations, the Intel chipset's stability and advanced features (VLAN, Jumbo Frames) are invaluable.
Product Disclosure (Amazon)
- Manufacturer: Intel Corporation
- Brand: インテル
- Seller: APOLO1969
- Fulfilled by: APOLO1969
- ASIN: B09BMFDKHK
- Note: This article covers a manufacturer-made product based on Amazon listing details.
