General Knoppix support for those who've read the FAQ at the Wiki
Cisco (SG100D-05-UK) 5-Ports External Ethernet Switch
$40.00
Cisco SG110 24 Port Gigabit Ethernet Switch w/ 2 x SFP SG110-24
$117.00
InHand Networks 5/8 Port Industrial Unmanaged Fast Ethernet/Giga DIN-Rail Switch
$85.00
Fortinet FortiSwitch FS-124D-POE 24 Port Gigabit Ethernet Switch UNREGISTERED
$99.97
Netgear Prosafe GS724T V2 24-Port 10/100/1000 Gigabit Ethernet Network Switch
$27.99
NetGear ProSafe GS748T V4 48-Port Gigabit Smart Switch w/ Ears
$30.00
Linksys SE3008 8 Ports Rack Mountable Gigabit Ethernet Switch
$21.99
New Linksys SE3005 5-port Gigabit Ethernet Switch
$18.99
ARUBA J9772A 2530-48G PoE+ 48 PORT ETHERNET SWITCH W/ RACK EARS J9772-60301
$125.69
Cisco Small business SG300-28P Managed 28 Port Gigabit Ethernet Switch
$60.31