The main difference between MCX631102AS-ADAT and MCX631102AN-ADAT is the package type and the operating temperature range.   1. Package type: MCX631102AS-ADAT and MCX631102AN-ADAT have different package types. Among them, "AS" and "AN" represent different package types. "AS" has one more function - support for Secure Boot.   2. Operating temperature range: The operating temperature range of MCX631102AS-ADAT and MCX631102AN-ADAT is also different. The operating temperature range refers to the temperature range in which the module can operate normally. The specific operating temperature range may vary depending on the requirements and specifications of the device.   MCX631102AS-ADAT ConnectX-6 Lx EN Adapter Card 25GbE Dual-Port SFP28 PCIe 4.0 x8 Secure Boot No Encryption High Bracket NVIDIA ConnectX-6 Lx Ethernet SmartNIC Providing up to two ports of 25GbE connectivity and PCIe Gen 3.0/4.0 x8 host connectivity, the ConnectX-6 Lx ADAT is part of NVIDIA's world-class, award-winning ConnectX family of network adapters. Continuing NVIDIA's continued innovation in networking, ConnectX-6 Lx provides agility and efficiency at any scale. ConnectX-6 Lx delivers cutting-edge 25GbE performance and security for the no-compromise data center.   Providing up to two ports of 25GbE connectivity and PCIe Gen 3.0/4.0 x8 host connectivity, the ConnectX-6 Lx MCX631102AS-ADAT is part of NVIDIA's world-class, award-winning ConnectX family of network adapters. Continuing NVIDIA’s continued innovation in networking, ConnectX-6 Lx delivers agility and efficiency at any scale. ConnectX-6 Lx delivers cutting-edge 25GbE performance and security for the no-compromise data center.   STOR Technology Limited provides you with high-quality network card adapters such as X550-T2, MCX512A-ACAT, MCX4121A-ACAT, MCX4421A-ACAN, X520-DA2, and provides you with higher quality services and reliable after-sales services. You are welcome to visit and discuss related products. Our website: https://www.cloudstorserver.com/ Contact us: alice@storservers.com / +86-755-83677183 Whatsapp : +8613824334699