Cactus Technologies Industrial Grade Compact Flash cards are the most reliable, high endurance flash storage devices on the market today. They are designed with the highest quality SLC NAND for applications which demand data integrity and 100% uptime. The Compact Flash form factor has been in existence since 1995 and its small size and rugged construction is ideal for many embedded flash storage requirements. For more price sensitive applications, Cactus Technologies also offers pSLC and MLC memory series.