Product Description:

The C9900-H551 is a removable memory module produced by Beckhoff within the C9 PC Accessories series. It is a CFast solid-state storage card intended for use with Beckhoff Industrial PCs and embedded controllers. In automation systems, the card stores operating systems, recipe data, and logging files, allowing quick replacement or offline cloning without dismantling the host hardware.

The card is rated for Industrial use, indicating that its components and soldering processes are intended for continuous duty cycles and exposure to electrical noise common in control cabinets. Its physical interface follows the CFast form factor, so it connects through a SATA-based slot while preserving the compact outline expected in panel PCs. An onboard capacity of 8 GB provides space for real-time operating systems and application code while helping keep storage demands modest. Data retention relies on SLC NAND cells; single-level storage delivers high endurance by storing only one bit per cell, which is useful for frequent log file updates. Card removal uses a Push/Push eject mechanism that engages and releases through spring pressure, making the media easy to insert and remove.

Thermal resilience extends up to +85 °C, letting the card operate next to drives and power supplies that raise enclosure temperatures beyond office-grade limits. The connector releases after 4 mm of guided travel, helping the pins disengage evenly and reducing wear over repeated insertion cycles. Although the medium uses solid-state flash, the controller emulates Hard Disk behavior so legacy software can recognize the device without specialized drivers. Because the storage is Non-volatile, its contents remain intact when power is removed. This makes the card suitable for systems that need persistent storage for machine data and operating files.