Could you please about the hdd for notebook IDE

HI I come from Thailand 

I need internal harddisk Ide  320 GB wd for notebook  40 EA

because my coustomer want it. So I need WD to help me to find it to but nearly Thailand or find some place to buy it.

Thank you very much . I need you to help me.

Best  regard

it seems to be available through… not sure where in Thailand  you can get that.