features:Aluminumexternalenclosurewillcooldown2.5 HDDeasilyAllowsdevicehot-swapping(PlugandPlay)SupportSataHDDupto500GBCE/FCCapprovalBuspower(powerconsumptionmustunder5V/1A):TakethepowerfromthehostPCextraUSBport,noexternalpowernecessaryRecommanduseexternal5V,2AmpPoweradapterProductdimension:5.13x3.25x0.56inchesoperatingsystemsupport: USB2.0WindowsMEoraboveMacOS9.0oraboveFirewire:WindowsMEoraboveMacOS9.0orabovee-SATA:WindowsMEoraboveMacOS9.0orabove Serial: MODE CONNECTION HDD COLOR GEN-172 USB2.0 Firewire SATA BLACK