And now...
Something completely different...
Group shoot 😎

Oldest 286/16... newest P-IV 3.0GHz and everything in between 🤣
1. ATX, Gigabyte GA-5AX Pentium MMX 233 @ 300, 128MB SDRAM, Voodoo 3 2000 AGP
2. AT, 386DX-33, 64kb cache, 8MB ram, PAS16&matching CD unit
3. AT, 386SX-33, 4MB ram, Tseng 4000AX 1MB, Creative SB16 non-PnP
4. AT, 286-16, 4MB ram, Trident 8900D 1MB
5. AT, 386DX-40, 256kb cache, 32MB ram, Tseng 4000AX 1MB, Creative SB16
6. AT, AMD K6-2 300 @ 366 (not complete yet)
7. AT, ST486DX2-66, 64MB ram, VLB ALI 1MB
8. AT, Pentium 133, 64MB ram, PCI S3 964 4MB
9. mATX, P-III 833MHz, 512MB, Voodoo 3 3000 AGP, AWE64 ISA
10. AT, AMD 5x86-P75, 133MHz @ 160, 64MB, PCI S3 725
11. AT, Cyrix 486DX2-66MHz, 64MB, VLB CL-5426 1MB
12. AT, Pentium II 400MHz, 256MB, AGP Matrox G???
13. mATX, P-III 866MHz, 512MB, AGP Geforce 4 4200 128MB, Voodoo3 3000 PCI, SB Live!, 320GB HDD, DVD-RW NEC-2500 (Win98&WinXP Dual boot)
14. ATX, HP Vectra VL400, P-III 1GHz, 256MB, 40GB HDD, Windows 2000
15. ATX, P-IV 3.0 Prescott, 512MB ram, AGP ATi 9600PRO 256MB, 120GB HDD
16. ATX, AMD Sempron64 2800+, 512MB, AGP ATi 9600XT 256MB, 80GB HDD
Edit:
Replaced the picture. I realised there should be no empty 3.5" and 5.25" unit. Also added numbers for future reference 😅
Edit2:
Added quick specs for all computers.