General Knoppix support for those who've read the FAQ at the Wiki
Cisco Catalyst C9300-24UX-A 24 Port 10G/mGig UPOE Network Switch, no module
$379.97
ARUBA J9772A 2530-48G PoE+ 48 PORT ETHERNET SWITCH W/ RACK EARS J9772-60301
$125.69
Cisco SG200-50 Small Business 50 Port Gigabit Smart Network Switch
$44.99
Dell PowerConnect 6248 48 Port Managed Gigabit Ethernet Switch
$59.94
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
Cisco Catalyst WS-C3650-24PS-L 24-Port Gigabit Ethernet Network Switch
$39.99
Fortinet FortiSwitch FS-124D-POE 24 Port Gigabit Ethernet Switch UNREGISTERED
$99.97