The DES-5016TF, displayed in Figure 2, comes with eight 10/100-TX ports and eight 100BASE-FX ports. The DES-5016TF is shown with the optional 1-Port1000BASE-SX module installed.
Figure 2: DES-5016TF
The DES-5016FX, displayed in, Figure 3, has 16 10/100-TX ports installed. It is shown with the optional 2-Port100BASE-FX module installed.