OWC 1.0TB Mercury Elite Pro mini, 72400RPM, USB 3.0 + eSATA, Portable Storage Solution 1.0TB, 7200RPM Bus-Powered, Multi-Interface Storage Solution Bus-powered via USB 3.0 (DC to USB connector included), Bus-powered via USB 3.0 (DC to USB connector included) High-performance and Plug and Play data storage/backup reliability with a fanless, bus-powered design Connection cables included 3 Year OWC Solution Limited Warranty Interfaces: USB 3.0 &amp; 2.0; eSATA 6G The USB 3.0 Micro-B port is backwards compatible with USB 2.0 cables (USB 3.0 standard A to Micro-B connecting cable is included) All interface cables are included Bus-powered via USB 3.0 (DC to USB connector included) Data transfer speeds up to 600MB/s (via eSATA; 500MB/s via USB 3.0) Drive speeds of up to 7200RPM or Solid State Drive Perfect for digital photography, professional music, graphics, general data, and Time Machine Portable size at 5.5in(L) x 3.8in(W) x 1.1in(H) Brushed aluminum, impact resistant, heat dissipating enclosure Super-quiet, fanless operation Asmedia 1051E and 1456 high-performance chipset Mac OS 8.6 to 9.2.2, Mac OS X 10.0.x or later and an available USB 1.1. Mac OS X 10.2.8 or later. Windows 98SE or later and an available USB 2.0/1.1 port. Windows 2000 or later and an available USB 2.0/1.1, or eSATA port. Supported on Macs and PCs that support booting viaUSB or eSATA Bus power via USB on most computers with factory installed USB 2.0 or USB 3.0 port. Bus Power via FireWire 800 supported on all models equipped with an available FireWire 800 port either factory stock or via add on FireWire 800 PCI Card. Bus Power via FireWire 400 on all models made in 2001 or later via Factory ports or any model with add on FireWire 400 PCI Card. Bus power via USB on most computers with factory installed USB 2.0 or USB 3.0 port. Replacement power supply sold separately Adapter plugs for international use sold separately Asmedia 1051E and 1456 High-Performance Chipset 1.0TBHGST Travelstar 7K1000 Hard Disk Drive* SATA (Serial ATA) 32 Megabyte (32,768k) 7200RPM eSATA  1 port USB 3.0  (1) Micro-B port eSATA  600 MB/s USB 3.0  500 MB/s USB 2.0  60MB/s USB 1.1  1.5MB/s OWC Mercury Elite Pro mini Bus-Powered, Multi-Interface, USB 3.0 &amp; 2.0, eSATA Storage Solution with Hard Drive 18 in (46 cm) High-quality eSATA connecting cable 18 in (46 cm) High-quality USB 3.0 connecting cable High-quality DC to USB connector 3.8 in (W) x 5.5 in (D) x 1.1 in (H) 96.52mm x 139.7mm x 27.94mm Approximately 0.73 pounds (.33kg)