Adata hv 610 is a good external portable hard drive .the capacity of harf drive is 500 gb.it supports windows, mac, linux os .the hard drive supports usb 3.0 and 2.0 ports both.i bought this hdd from online shoping portal indiatimes shoping in rs. 4200. I was using this portable hard drive from past one and half year and I can’nt face any trouble or problem its working well.adata is a good brand in memory( storage) making field.the hdd come with three year warranty.amd supports plug n play.nice hdd to store data externally.