General Knoppix support for those who've read the FAQ at the Wiki
Cisco SG300-52-Port Gigabit Managed Rack Mountable Network Switch
$44.95
Cisco WS-C3750X-48PF-S 48 Port PoE Gigabit Switch w/ C3KX-NM-10G & Dual 1100WAC
$121.88
Cisco WS-C3850-24S-S 24 Port IP Base Switch - W/ 10G - Same Day Shipping
$499.99
Cisco Catalyst C9300-24P-A 9300 Series 24-port PoE+ Switch Network Advantage
$599.99
Genuine Cisco ‎SFP-10G-SR Transceiver Module (10-2415-03)
$5.85
Cisco C3850-NM-2-10G 2 Port Network Exp.Module for 3850
$32.90
Cisco 2900 Series CISCO2901/K9 v06 Integrated Services Router
$39.99
Cisco C3850-NM-2-10G Network Expansion Module
$25.00
✅ CISCO ASR1001X-K9 6-PORT x 1 Gigabit SFP ROUTER, ASR1001-X DUAL-PWR-AC
$539.97
Cisco C3850-NM-4-10G 4 Port Network Exp.Module for 3850
$134.90