This article covers Buacoz シングルポート 2.5G ギガビットネットワークカード Intel I225チップ PCI-E X1イーサネットアダプター付き RJ45 LAN NICカード 10M.

Overview

The Buacoz Single Port 2.5G Gigabit Network Card brings Intel I225-V chipset performance to your desktop PC via a PCI Express interface. It supports data rates up to 2.5Gbps, offering a significant upgrade over standard Gigabit Ethernet while maintaining backward compatibility with 10/100/1000Mbps networks. This makes it an ideal solution for users who need faster wired connectivity without replacing their entire network infrastructure. Installation is straightforward: simply insert the card into any PCIe X1 (or larger) slot, secure it with the included standard bracket, install the driver, and connect an RJ45 cable. The card is fully compatible with Windows 10 and 11, and the Intel I225-V controller ensures broad driver support and stable operation.

Connectivity & Compatibility

Interface: PCI Express X1 (works in X4/X8/X16 slots) Supported OS: Windows 10 / 11 (64-bit) Network standards: IEEE 802.3 10BASE-T, 100BASE-TX, 1000BASE-T, 2.5GBASE-T Connector: Single RJ45 port Auto-negotiation for full/half duplex Not compatible with legacy PCI slots

Product Info

Released around 2024, this network card is available through and other online retailers. Priced at approximately ¥7,000–¥7,500, it sits in the entry-to-mid-range segment for 2.5GbE adapters. The use of Intel's I225-V chipset provides excellent stability and compatibility, making it suitable for NAS builds, soft routers, gaming PCs, and general home office use. Warranty typically covers one year from the seller. The package includes the network card, a standard bracket, and a quick-start manual. A low-profile bracket is not included and may need to be purchased separately if required.

Best Use Cases

Upgrading a desktop PC with only a 1Gbps onboard LAN port to 2.5Gbps for faster local transfers Building a home NAS or file server where high-speed wired connectivity is critical Creating a custom soft router or firewall appliance that demands reliable, low-latency wired networking Gamers and content creators who frequently transfer large files and want to reduce network bottlenecks

Product Disclosure (Amazon)

  • Manufacturer: Buacoz
  • Seller: Centroid.
  • Fulfilled by: Centroid.
  • ASIN: B0D83MS8CX
  • Note: This article covers a manufacturer-made product based on Amazon listing details.