I wanted to support, Be_Far,here:
Be_Far is the only one that I noticed mentioned that the FW13 only has four (4) expansion ports but the FW16 has six (6) expansion ports. Just to emphasize in case you ‘really’ wanted all six at the same time and may want to sell or pass down your FW13 for the FW16.
Thanx,
Wio
Texas Citizen