For sale is an original Apple ROM (firmware) SIMM set, including both the Even and Odd modules:

• Apple P/N: 341-0675-A

• Apple P/Ns: 630-1085 (Even) + 630-1086 (Odd)

• Type: ROM SIMMs (system firmware / “boot ROM”), NOT RAM

These SIMMs contain the machine’s ROM firmware (the low-level code the computer uses at startup for hardware initialization and boot routines). Some vintage Apple systems use paired ROM SIMMs labeled Even and Odd, and require the matching pair installed together to function.

Condition

• Good physical condition (no visible cracking or corrosion; components appear intact)

• Untested due to lack of compatible hardware

• Sold as-is as vintage electronic parts

What’s Included

• (1) Even ROM SIMM – 630-1085

• (1) Odd ROM SIMM – 630-1086

• Sold as a set (you will receive both)

Compatibility Notes (Important)

These are Apple-specific ROM SIMMs intended for vintage Apple/Macintosh-era hardware that supports Even/Odd ROM SIMM pairs. They are not compatible with modern Macs or PCs and are not memory upgrades.

Because Apple used multiple ROM revisions across different models/logic boards, please verify part number compatibility with your exact machine before purchase.

SHIPPING
The item will be well packed in anti-static bag with plenty of protective packaging.  Shipping is via First Class Mail (3-5 day delivery) for domestic shipping.  Priority Mail (2-3 day) shipping is available at the time of checkout for US buyers. Non-US shipping is via USPS First Class Mail International, which will arrive in 2-4 weeks depending on country.  Global Priority Mail (6-10 days) is also available.

WARRANTY
We will warrant this item for a period of thirty days (ONE MONTH) starting on the date of delivery.  If you find any problem with the item, you may return it for an exchange with an identical item.  If inventory does not permit an exchange, we will gladly issue a refund minus the shipping cost.