Real SUPERSPEED with USB3.0 Protocol: D5-300C adopts USB3.0(5Gbps) SUPERSPEED protocol, the read/write speed is up to 410MB/s (SSD in RAID 0). D5-300C is compatible with Mac and Windows computers. (This is a DAS, NOT a NAS) Unique 2+3 RAID mode: It provides 2+3 RAID storage. This means that HDD1 and HDD2 can be configured as RAID 0, RAID 1 or Single disk to secure your important data. The remaining drives 3-5 work as single, independent drives. This allows you maximum flexibility in utilizing these three drives. Up to 80TB Storage Capacity: It is Compatible with 3.5" and 2.5" SATA HDD; 2.5" SATA SSD. Maximum Single Volume Size:16TB. For stable performance, it is recommended to use WD Red and Seagate IronWolf hard drives. (Note: users need to purchase their own hard drives. HDDs are not included.) Various applications: D5-300C is usable for various data application including video editing, photo backup, research and development, technical document preservation, file backup, music library, financial records, video surveillance, and corporate data storage. Scientific design and reliable certification: Featuring an aluminum-alloy shell and low-noise fans, D5-300C is extremely solid and reliable with good heat dissipation capabilities and low noise production. It has passed multiple certifications, including FCC, CE, UL, GS and RoHS.