For sale is a Sonnet Crescendo/L2 G3 400MHz processor upgrade card with 512K cache for compatible vintage Power Macintosh and Mac OS compatible system with an L2 cache slot.
According to Sonnet, the Crescendo/L2 G3 series supports the Power Macintosh 4400, 5400, 5500, 6400, 6500, 7220, the 20th Anniversary Macintosh / TAM, Power Computing PowerBase, and Motorola StarMax systems.
Please confirm compatibility with your exact system before purchase. L2 cache slot upgrades can be sensitive to system model, ROM version, firmware, system software, and existing hardware configuration.
Cosmetic condition is good overall. The PCB is clean and the edge connector is in good condition.
Includes the processor upgrade card only. No software, manual, or other accessories are included. Sonnet software can be downloaded on the Macintosh Garden and Macintosh Repository.
This is vintage hardware for vintage Apple computers. Use of this item requires era-appropriate knowledge and compatible hardware. I am happy to answer reasonable questions, but step-by-step installation support is not provided, and compatibility with every system configuration cannot be guaranteed.
Fast and careful shipping from Tokyo, Japan.Please be aware of any customs import duties or taxes in your country.
🇺🇸 US buyers: shipments are sent DDP (Delivered Duty Paid), which means there are no duty fees on delivery, as duties are included in the shipping rate.
Please also note that customs delays may occur, particularly within the EU.
This is vintage hardware/software for vintage computers. Use of this item requires era-appropriate knowledge and compatible hardware/software. Please carefully verify your intended use and compatibility before purchasing. I am happy to answer reasonable questions, but compatibility with every system or configuration cannot be guaranteed, and step-by-step installation support is not provided. Issues arising from incorrect installation, modification, or incompatible use are outside the seller’s responsibility.
I usually ship within 24 hours. If shipping falls on a Saturday in Japan, dispatch may occur the following Monday.
