TRENDnet TEG-S4000 - Manual (Page 17)

Figure 2-3. 4-Slot Modular Switch 100/1000 Hub in a
collapsed backbone link
Fileserver Link
100Base Solution
With a fileserver link, you can increase file server
performance by increasing the Hub's bandwidth between
one or more fileservers and the workgroups they serve.
If you connect 10Mbps workgroup hubs to the 10Mbps
ports on the 4-Slot Modular Switch, traffic in one
workgroup will not interfere with the performance of
another workgroup.