General Knoppix support for those who've read the FAQ at the Wiki
DELL PowerEdge R730XD Server 2x E5-2697v4 2.3GHz =36 Cores 32GB H730 4xRJ45
$378.00
Dell R630 Server 2x E5-2620 V4 2.1GHz =16 Cores 128GB DDR4 1x 960GB 2x 1G 2x 10G
$345.00
Dell PowerEdge R730, 2 sinks, SystemBoard, 8 trays,H330,Idrac 8 exp, 2x750w Psu
$135.00
Dell PowerEdge R620 Dual Intel Xeon E5-2697 v2 @2.70GHz 128GB RAM No HDD S110
$144.50
Dell R730xd 26 Port SFF 2x E5-2697v4 36-Cores H730 128GB Server 2x SFP 10G ENT
$490.00
Dell PowerEdge R620 Server - 256GB RAM, 2x8cCPU, 120Gb SSD/3x900Gb SAS, Proxmox
$320.00
CTO Dell PowerEdge R630 Server, 2x Xeon E5-2620V4, 64GB- 512GB RAM, 480GB SSDs
$313.33
Dell PowerEdge R230 1U Server BOOTS Xeon E3-1270 v5 @ 3.60GHz 8GB RAM NO HDDS
$79.99
Dell R730XD 12LFF 2SFF 2x E5-2690v4 28C 128GB H730 12xTrays iDRAC ENT RJ-45 10G
$670.00
R630 DELL 8 x 2.5'' POWEREDGE 2X E5-2660V3 32GB RAM IDRAC ENT & NDC 2X 495W PSU
$159.95