Product Description:

The C9900-L100 is a plug-in PC accessory produced by Beckhoff within the C9 PC Accessories series. Designed for control cabinet or machine mounting, this module extends industrial PCs by providing removable storage or license dongle functionality through its bus connection, so TwinCAT automation software can register additional features without opening the enclosure. It is suited to installations where removable media or licensing access must remain available from the outside of the system.

The device mates with a host through a USB 2.0 supply interface that also delivers power, eliminating external wiring. Its housing width is 15.5 mm, so it occupies minimal space next to neighboring modules. When the protective cap is fitted, the overall length is 38.25 mm. Removing the cap reduces the length to 35.75 mm, and the plug itself projects just 12.5 mm beyond the housing. The plug’s contact area is 7.6 mm wide, aligning with standard USB receptacles. With an IP20 rating, the accessory must be mounted inside an enclosed panel where dust and accidental finger contact are already controlled. These compact proportions help when multiple dongles or connectors must line up along adjacent USB sockets on embedded PCs, avoiding mechanical interference with surrounding cabling.

For reliable service, the module tolerates ambient temperatures from -25 °C up to +60 °C during operation, while acceptable storage spans -40 °C to +85 °C, giving flexibility for transport and spare parts warehousing. A maximum relative humidity of 95% (non-condensing) permits use in humid production zones as long as condensation is avoided. The accessory supports TwinCAT builds starting with 4020, so older runtime versions may need an update before the unit is recognized. Because the installation position is variable, the body can be oriented horizontally or vertically without affecting signal integrity or thermal behavior.