Love this desk, didn't add the side unit for the hard drive, as we don't need it on top of our bed. Also didn't leave the key board tray as we have a mattress topper and leaving the keyboard was just to tight getting the desk to roll over our bodies. It's a king size bed. 82 " wide, just fits. Suggest adding another notch, to raise the height at least 4 or 5 inches.