Feature Description Capacity 4 TB Internal Storage Media 1 x 7200 RPM/64 MB cache (or greater) hard disk Interface 2 x Thunderbolt™ 2 ports 1 x USB 3.0 port (UAS and USB 2.0* compatible) Interface Transfer Rate Thunderbolt 2: 20 Gb/s USB 3.0: 5 Gb/s Performance Benchmark Thunderbolt 2 and USB 3.0: 4TB: Up to 180 MB/s reads Thunderbolt 2 Technology Bidirectional 20 Gb/s permits a high-resolution display and RAW 4K video playback Power-Saving Mode Reduce power consumption by spinning down disks without disrupting daisy chain transfers (short press on front button initiates power-saving mode; long press turns product off completely) Security AES 256-bit software encryption Kensington® lock compatible Cable management Cooling Fan-free design with all-aluminum unibody enclosure for low vibration and near-silent operation External Hybrid Storage Compatible with LaCie d2 SSD Upgrade (sold separately): • Adds hard disk + SSD versatility in a single-disk enclosure • Boosts speeds up to 1150 MB/s • Two independent drives mount – one for hard disk, one for SSD (JBOD) Software Intego® Backup Assistant for Mac® LaCie Genie Timeline for PC LaCie Private-Public (protect data with AES 256-bit encryption) Power Supply 100-240V, 50/60Hz; 18W Acoustic Typical noise level: 28 dB^ Dimensions 60 x 217 x 130 mm | 2.4 x 8.5 x 5.1 in. Weight 4 TB: 1.4 kg | 3.1 lbs System Requirements Computer with a Thunderbolt 2, USB 3.0, Thunderbolt*, or USB 2.0* port Thunderbolt 2: Mac OS® X 10.8.5 or later USB 3.0: Windows® 7, Windows 8, or Mac OS X 10.6 or later Minimum free disk space: 600 MB recommended The LaCie d2 SSD Upgrade requires a LaCie d2 Thunderbolt 2. It is not compatible with the LaCie d2 USB 3.0. Box Content LaCie d2 Thunderbolt cable USB 3.0 cable (USB 2.0 compatible**) External power supply Quick Install Guide