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First of all, this is not a PC if you meant desktop...this is a LAPTOP. You could go as high as 10TB if you could afford it. There's only 1 readily available SATA slot...if you wanted to have another drive, then you must buy a 2.5" Optical drive housing for a HDD so you could easily slide it in to replace your optical drive.
Sorry, there was a problem. Please try again later.I've seen conventional 2.5" hard drives up as high as 5 terabytes. As near as I can tell, it's got one hard drive in the only available bay.
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