Vintage Compaq 72-Pin SIMM Memory Module with Toshiba Chips

This is a vintage computer memory module, specifically a Single In-Line Memory Module (SIMM), likely from the mid-1990s. The unit features a green printed circuit board (PCB) with a single row of gold-plated or tin-plated connector pins along the bottom edge, characteristic of the 72-pin SIMM standard. Mounted on the board are multiple black integrated circuit chips. Notable markings include a white label on the lower chip identifying it as a 'COMPAQ' part with the serial number '185172-002'. The upper chip bears a 'TOSHIBA' label with technical specifications 'THM322005ASG-80' and '9446 USA', which indicates a manufacturing date around the 46th week of 1994. The module has a length of approximately 4.25 inches. Physically, the item shows minor signs of aging, including slight yellowing of the paper labels and some oxidation on the solder points, though there are no visible signs of traumatic mechanical damage or burnt components. The presence of both 'Compaq' and 'Toshiba' branding suggests this was a high-quality OEM part produced for Compaq's proprietary desktop or server systems of that era. The construction quality is indicative of industrial standards from the early 1990s computing market.

I have examined the digital representation of this vintage 72-pin SIMM module. Based on the identifying marks '185172-002' and 'THM322005ASG-80', this is a 2MB or 8MB Fast Page Mode (FPM) parity memory module, manufactured in late 1994. The visual condition appears fair; the gold-plated pins show minimal wear, and the labels, though aged, are legible. The branding reflects a period when Compaq utilized high-end Toshiba components for their ProLiant or Deskpro lines. Market demand for 72-pin SIMMs is primarily driven by retro-computing enthusiasts restoring 486 or early Pentium-class machines. While the Compaq OEM part number adds interest for brand-specific restorations, these modules were mass-produced. They are currently available on secondary markets (e.g., eBay) in the $10 to $30 range, often sold in matched pairs. The value for a single unboxed unit is modest compared to rare processors or early 8-bit expansion cards. Significantly, I cannot verify the electrical integrity of the storage cells or the stability of the Toshiba ICs from an image. A physical inspection would be required to rule out trace corrosion or internal shorts. For a full authentication and 'certified functional' status, I would need to test the module in a documented POST (Power-On Self-Test) using a compatible vintage logic board. Provenance is assumed based on the factory labels, but the risk of 'bit rot' or ESD damage remains a variable only solvable through diagnostic hardware testing.