These precision-engineered cartridges are perfect for backing up files & archiving data. To save you time & spare you aggravation, they're optimized for automation. When it comes to consistent, error-free operation, these high quality cartridges have few rivals. For additional convenience, they also feature an extended shelf life. For Drive Type: MLR; SLR; Compatibility: QIC-4GB-DC; SLR5; Maximum Native Data Capacity: 4 GB; Maximum Compressed Data Capacity: 8 GB.