Using knoppix on laptops. LCD screens, APM, PCMCIA ...
1U BareMetal pfsense opnsense Router Firewall DNS Server 6x 10GB Ethernet Ports
$149.00
1U Supermicro Server 10 Bay 2x Intel Xeon 3.3Ghz 8C 128GB RAM 480GB SSD 2x 10GBE
$273.00
UNRAID Supermicro 4U 36 Bay Storage Server Xeon 20 Core 3Ghz 256GB X540 10GBaseT
$588.00
HP ProLiant MicroServer Gen10 8GB RAM TPS-F022
$189.99
SuperMicro Server 505-2 Intel Atom 2.4GHz 8GB RAM SYS-5018A-FTN4 1U Rackmount
$197.99
SuperMicro CSE-836 16LFF Server X9SCL+-F Xeon E3-1220V2 3.10GHz CPU 8GB RAM
$169.99
HP HPE Microserver Gen 7 8 9 iLO 2/3/4/5Advanced License Lifetime Key| FAST SHIP
$10.00
SuperMicro CSE-836 16LFF Server X8DTL-i Xeon E5606 2.13GHz CPU 8GB RAM *No HDD
$159.99
1U 20" Short Depth Server Firewall PFSense X11SSH-F Xeon 3.5Ghz 32GB RAM NVME
$247.00
Supermicro CSE-825-7 X10DRW-i 2 Xeon E5-2667v4 3.2GHz SAS3 2U One Power Supply
$209.75