General Knoppix support for those who've read the FAQ at the Wiki
ARUBA J9772A 2530-48G PoE+ 48 PORT ETHERNET SWITCH W/ RACK EARS J9772-60301
$125.69
NetGear ProSafe GS752TP V1H1 52-Port Gigabyte PoE Ethernet Network Switch
$109.99
Cisco SG300-10P 10x PoE RJ45 Gigabit Switch SRW2008P-K9 V03 + Power Adapter
$37.49
Cisco Catalyst 3850 48 PoE+ Gigabyte 48-Port Ethernet Network Switch
$109.99
New Linksys SE3005 5-port Gigabit Ethernet Switch
$18.99
Cudy 5-Port 10/100Mbps Fast Ethernet Desktop Unmanaged Switch | FS105D
$12.99
Linksys SE3008 8 Ports Rack Mountable Gigabit Ethernet Switch
$21.99
New 10/100 Mbps 8 Ports Fast Ethernet LAN Desktop RJ45 Network Switch Hub
$11.49
Netgear Prosafe Plus JGS524PE 24 Port Gigabit Switch 12 Port PoE JGS524PE-100NAS
$129.98
BROCADE ICX6610-24F-E 24-port 1 GbE SFP Switch
$75.95