From the FAQ on the Kaleidescape website:-
"Does Kaleidescape recommend a particular network switch?
No. However, Kaleidescape dealers have reported good results with:
Dell PowerConnect Series Gigabit Ethernet switches (2708, 2808, 2716, 2816, 2724, 2824, 5324, 6248)
Cisco Small Business Managed Gigabit Switches (SRW2008, SRW2016, SRW2024)
Pakedge Gigabit Switches (SW8-GBP, SW8-GBM and SW24-GB)
If the switch will be located in an area in which noise is a concern, note that the Dell 2708, 2808, 2716 and 2816, Cisco SRW2008, and Pakedge SW8-GBP and SW8-GBM are quieter fanless switches."
I use Pakedge and have found their products highly reliable.