6AV2181-8XP00-0AX0 Siemens Memory Card For Use With HMI SIMATIC HMI operator panels. Backup sensitive data from your HMI operator panels using this memory card from Siemens. It offers 2GB of memory space to let you store and transfer large files. Thanks to a read and write transmission rate of 1.6Mbit/s, you can move large packets of data in a short time. This memory card is compatible with most Windows operating systems, up to Windows 10, making it a versatile storage device. It has an integrated locking mechanism on its side for write protection and data security.