Transfer Windows 7 Pro build to new comp, with new key

I am assembling a second computer with identical CPU and motherboard:
i7-4770K, ASRock Extreme 4 Z87, CPU-video
RAM of second computer to be determined

Can I use a clone of the Windows 7 Pro build from the first computer, and simply change the key?
I have another, unused copy of W7 Pro.

The first computer has had multiple hard drives & SSDs, RAM sticks, etc.,
but always the same CPU and motherboard.

Will the history of the first computer compromise the second computer (with its new key)?

I have another OEM Windows 7 Pro disk package, from Newegg.

If you already own OEM version on that PC then the existing key might reactivate on the same mobo. This is how OEM's often handle this. It's worth a try.

Any other retail SKU can of course migrate wherever you want. If it's Upgrade version it requires a copy of qualifying OS being available and not used while serving as qualifier.

Not sure I understand "reactivate". I am adding an additional computer, and plan to continue using the first.

The boxes each have a different COA Barcode. That is different from the product keys, which are also different from the barcode, and from each other.

OK, it wasn't clear you intend to keep using the first PC.

In that case you'd need the second license, but yes you can change the Product Key after cloning at Computer>Properties or using SLMgr Commands to insert key and activate from Command Line.

VTechSquad said:

The windows 7 pro is a multiple (3) use. So i guess u should not have a problem.

Which Win7 Pro is multiple use? Have never seen this before.

Can we see a link please?