A:Answer I have one installed in a Acer Aspire One AO756, which is an old netbook - and it works perfectly. If your model is using a hard drive, this will replace it, as all hard drives are 2.5 inch form factor already. You can verify this by looking at the model in Disk Management (Windows) or in Disks (Linux), or simply removing the bottom of the laptop and looking at the drive. If you have a newer model that is using a M.2 SSD, this will not fit - chances are this won't apply as you would have a fast SSD already.