2.5" Enclosure  HDS259US-BL-DB USB2.0 high-speed transfer interface. Round and slim design to give a nice and simple view. Conducting outer case prevents static from the hard drive.   　 2.5" Enclosure  HDS259US-DP-DB USB2.0 high-speed transfer interface. Round and slim design to give a nice and simple view. Conducting outer case prevents static from the hard drive.   　 2.5" Enclosure  HDS259US-GL-DB USB2.0 high-speed transfer interface. Round and slim design to give a nice and simple view. Conducting outer case prevents static from the hard drive.