I am installing a second Internal Hard Drive into a Dell Inspiron Model 3670. The additional drive is a 4T WD Blue 3.5". After using a Power Splitter Cord and restarting the PC everything booted just fine.
My dilemma is that my Win Ten System can't "see" the newly installed HD. The drive did not come with any installation disc, nor instructions.
Its been awhile since I have built my own systems so I am sure things have changed in the past few years. But basically you have set the jumpers on each disk to make the main disk the MASTER which contains the OS, It will be your C:/ drive, then set the jumper on the second disk and that will be your slave drive. It should be D:/ You may have to contact the manufacturer of your drive for info on how to do this.