General Knoppix support for those who've read the FAQ at the Wiki
2U 12 Bay SAS3 SuperMicro Server 6028U-TR4T+ W/ X10DRU-i+ Barebone 12 Caddy RAIL
$299.00
HP HPE Microserver Gen 7 8 9 iLO 2/3/4/5Advanced License Lifetime Key| FAST SHIP
$10.00
ArcServe UDP 8200 SuperMicro X10SRW-F 32GB RAM Intel Xeon E5-2620v4 No Drives#73
$210.00
Supermicro Micro-Tower ServerIntel Xeon E-2136 3.3GHz, 16GB DDR4 1TB HD, NO OS
$699.00
HP ProLiant MicroServer Gen8 | Intel XEON E3-1220L V2 | 8GB RAM | NO HDD | 4 BAY
$249.99
HP ProLiant MicroServer Gen8 G8 G2020T 8GB RAM 4x 1TB HDD 4x 3.5" 712318-421
$269.99
HPE ProLiant MicroServer Gen10 AMD Opteron X3216 8GB RAM No HDDs
$325.00
Supermicro Server 505-2 Intel 2.4GHz 16GB SYS-5018A-FTN4 - pfSense Compatible
$220.48
$198.00
SUPERMICRO 1U SuperServer 96GB DDR3 x2 Xeon X5650 2.67GHz, 6016T-6RF+, 819-7
$159.00