Intel SL4SH P4 1.5GHz/256/400/1.7V Costa Rica Socket 423 CPU | RecycledGoods.com
PC Chips PSKBM1 Rev 1.0 Socket 423 Motherboard W/ Intel Pentium 4 CPU +I/O plate | eBay
i850 (Socket 423) based Motherboards
File:Socket 423 Top View.jpg - Wikimedia Commons
Gigabyte Announces GA-8IDX3 Motherboard supportingPentium 4 Socket 423 with Intel i845 Chipset | Noticias - GIGABYTE Latin America
Pentium 4 socket 423 system overview - YouTube
Intel Pentium 4 1.5 GHz (socket 423) - Hardware museum
i850 (Socket 423) based Motherboards
Intel Pentium 4 1.5 GHz SL5TN - Socket 423 | eBay
New MSI 845 Pro ver: 1 MS-6529 socket 423 ATX PC motherboard main system board - NOS S423 Pentium 4 P4 Willamette AGP 4x PCI USB - Classic Computer Shop