With the mGuard pci² SD, a new generation of compact Innominate mGuard security appliances for driverless operation in PCI slots is now available. It provides integrable firewall protection and secure VPN remote maintenance connections for all types of industrial, panel and embedded PCs, as used e.g. in robot controllers or HMI applications for operation and monitoring. This allows business-critical computers, machines or even entire system networks to be securely and reliably protected from attacks. In addition to the PCI card, an mGuard pcie² SD version is now also available for slots of the newer PCI Express standard, allowing universal use of the cards in any device with a PCI or PCI Express slot. The new cards have front-side configuration memory in the form of an exchangeable SD card, as is already implemented in current mGuard DIN rail devices. This enables the mGuard pci[e]² SD cards to be quickly and easily put into operation, updated or replaced.