General Knoppix support for those who've read the FAQ at the Wiki
TP-Link 24-Port Gigabit Ethernet Unmanaged Switch Desktop/Rackmount TL-SG1024D
$59.49
Cisco Catalyst WS-C3750X-48PF-S 48-Port Gigabit Network Switch With 10G Module
$26.92
Cisco Catalyst 3650 WS-C3650-48PS-S 48-Port Gigabit Managed PoE+ Ethernet CB-101
$62.86
Lenovo ThinkSystem NE1072T RackSwitch 48x10GbE w/ 6x 40GbE QSFP+
$200.00
Cisco SG300-52-Port Gigabit Managed Rack Mountable Network Switch
$44.95
Cisco WS-C2950-24 Layer 2 Switch 24-Port 10/100 Catalyst 2950 Series
$25.00
NETGEAR GS108 ProSafe 8-Port GbE Unmanaged Switch w/ Power Adapter
$14.99
HP ProCurve 2530-48G 48 Port Gigabit Ethernet Network Switch J9775A TESTED
$30.70
Lanolinx LNP-1002GN Switch, 8-Port 10/100TX + 2-Port SFP/Mini-GBIC 10/100/1000T
$39.99
Cisco WS-C3650-24PS-E 24-Port PoE+ Gigabit Switch with Racks 90 Day Warranty
$59.00