WD Red 3TB not recognised

Hi, I’ve recently purchased a 3TB WD Red to go in my HP Microserver N54L but the BIOS and Windows 7 OS are not seeing the drive (tried in all bays) but other WD (Green) drives are picked up fine.

Any suggestions as to what the problem could be?

Thanks in advance :slight_smile:


What size is the recognized WD Green disk drive? Is it also 3TB? Is the WD Red unit recognized if connected into the same port as the currently-working WD Green unit?