Once drives are installed, the TS-EC880U R2 can reach a throughput of up to 3,700+ MB/s and 400,000+ IOPS. Powering and cooling these features are accomplished by two redundant 400W PSUs and four 60mm fans. Using four USB 3.0 and four USB 2.0 ports, this QNAP NAS can be connected to other external drives. For safeguarding your data, this enclosure encrypts your data with FIPS 140-2 AES 256-bit encryption. Aside from data protection, it supports SMB/CIFS, NFS, and AFP protocols for file sharing across Windows, Mac, and Linux/UNIX networks. In addition, you can meet future data needs by cascading optional QNAP RAID expansion enclosures to the TS-EC880U R2 NAS enclosure.