ThinkServer always meets the demand on performance enhancement and feature enablement by continuous improvement on products and options. Upgrading your systems with the new options will bring you great values with flexibility, scalability, field-proven reliability.PCI Express 3.0 Eight lane (x8) PCIe interface at 8GT/s, 5GT/s, or 2.5GT/s (auto-negotiated with system) Comprehensive array of NIC, iSCSI, and FCoE Operating System drivers ECC protection of external DDR3 DRAM (single bit correction, double bit detection) ROHS complianceThinkServer always meets the demand on performance enhancement and feature enablement by continuous improvement on products and options. Upgrading your systems with the new options will bring you great values with flexibility, scalability, field-proven reliability.PCI Express 3.0 Eight lane (x8) PCIe interface at 8GT/s, 5GT/s, or 2.5GT/s (auto-negotiated with system) Comprehensive array of NIC, iSCSI, and FCoE Operating System drivers ECC protection of external DDR3 DRAM (single bit correction, double bit detection) ROHS compliance