General Knoppix support for those who've read the FAQ at the Wiki
HP ProLiant BL460c G9 (Gen9) 2x E5-2670V3 12 Core 3.1GHz No Ram or No Drives
$59.98
DELL PEM640 POWEREDGE M640 BLADE SERVER
$539.95
Dell PowerEdge FX2s CTO Blade 4 Slot 2U Chassis 2x 2000W
$399.00
HP ProLiant BL460c G9(Gen9) 2x 10 CORE E5-2660v3 2.6GHz 128GB RAM No SSD
$222.00
Dell PowerEdge M640 Barebone Server Blade No Hard Drive Trays
$499.00
727021-B21 HP ProLiant BL460c G9(Gen9) E5 10Gb FlexibleLOM CTO Blade Server
$66.00
HP Proliant BL460C Gen8 Blade Server 2x 8C E5-2690 192GB Ram
$58.31
W31V2 Dell 2700W 100-240V Power Supply For PowerEdge M1000e Blade Server 0W31V2
$19.99
Dell PowerEdge FC430 Blade with 2 x Xeon 2680v3 CPUs
$165.00
HP P17342-B21 M750 E2286M CTO BLADE SERVER
$329.95