expansion - What is the brown slot near the CPU socket on a Pentium 1 motherboard, and what is it used for? - Super User
Jamicon KM-T5-T1 REV:1.31 Socket 7 Motherboard, Intel Pentium MMX, 2 Sticks Ram - Retro PC Store
Slot 1 - Wikipedia
Intel PD440FX slot 1 ATX PC motherboard main system board - AA 668289-307 Pentium II 2 PII P2 PCI ISA USB Intel 440FX Yamaha YMF715-S OPL3 vintage retro 90s - Classic Computer Shop
Pentium on a 386 motherboard – Dependency Injection