Made to plug & play with Mac computers, iMac, MacBook's, MacBook Air, MacBook Pro. Mac OS extended Journaled (HFS+) formatted. Compatible with Mac OS X 10.2.
2 and newer: (Panther, Tiger, Leopard, Snow Leopard, Lion, mountain Lion, Mavericks, Yosemite, el Capitan, Sierra, and high Sierra). Aluminum external
Hard Drive Host interface: eSATA/ FireWire 800 (2) / FireWire 400/ USB 3.0 1 year limited Warranty