2.5GbE LAN 4-Port PCIe x1 RTL8125 with Fan

【Overview】 This is a 4-port 2.5GbE (2500Mbps) LAN card manufactured by SSU-TECH. While typical 4-port cards require a PCIe x4 connection, this product is a rare PCIe x1 connection specification, allowing you to expand high-speed networking even in environments with limited slots.

【Specifications & Features】

Chipset: Equipped with four independent, highly reliable Realtek RTL8125 chipsets.
Bus Interface: PCIe 3.0 x1 (compatible with all x1/x4/x8/x16 slots).
Cooling Performance: Features an active fan to efficiently dissipate heat from the chips even under full load on all four ports.
Supported Speeds: 2.5G/1000M/100M auto-negotiation.

【Technical Notes (Important)】 This product utilizes a PCIe 3.0 x1 connection.
Bandwidth Limitation: Due to the theoretical bandwidth of PCIe 3.0 x1 (approximately 8Gbps), if all four ports are simultaneously operating at a full 2.5Gbps load (totaling 10Gbps), the bus bandwidth will become a bottleneck.
Practicality: It offers sufficient performance for 2.5Gbps communication on a single port, operation divided into multiple segments, or for typical NAS/PC router use. It is ideally designed for those who prioritize port count in environments with limited PCIe lanes.

【Condition & Operation Check】
Operation Confirmed: Confirmed to link up and communicate normally.
Accessories: Includes a standard bracket as well as a low-profile bracket for small form factor PCs (space-saving PCs).
Shipping Contents: Main unit, one type of bracket (everything shown in the photos).

【Disclaimer & Returns】

This is a precision electronic device. We cannot provide support for compatibility issues or configuration with specific operating system environments (such as Proxmox, TrueNAS, ESXi, etc.).
Sold as-is. Cancellations due to incompatibility, or returns/refunds after shipping, will not be accepted. Please purchase only if you have the necessary technical knowledge and understand these terms.