Brand new programmable 512KB flash based ROM SIMM for Apple MAC SE/30, IIsi and IIfx.
New version with 1.27mm (50 mils) nominal PCB thickness to improve socket compatibility.
Flash chips can be re-programmed individually with a standard flash programmer with a PLCC-32 adapter.
The SIMM is also compatible with Doug's SIMM programmer.
Free flash service available with purchase.
Replaces Apple p/n: 341-0655-A, 820-0241-B, 820-0241-02, 820-0296-B.
Can be used to make the SE/30 32-bit clean. See last picture showing my SE/30 running MacOS 7.6.1
2MB SIMM with 1.5MB ROM Disk is now available in this listing
Designed and assembled in USA with all new components.
Documentation and support available at gglabs.us
1 year warranty and 30 days money back (less shipping cost) if not satisfied
We are happy to combine shipping for multiple items orders. However, due to ebay restrictions, an invoice must be requested before submitting the payment.
International buyers are welcome, however economy international shipping does not provide any tracking outside USA. If tracking is desired, please consider using International Standard which is significantly faster and provides door to door tracking to Canada, Australia, Japan, South Korea, Israel, New Zealand, Singapore, Hong Kong and most European countries. The destination country may charge customs duty and/or VAT. These charges are out of our control and must be paid by the buyer to their own government.
| Shipping Method | Tracking | Estimated Delivery | Refund/resend After |
| First class (USA) |
Good |
3-10 days | 3 weeks |
| Priority Mail (USA) |
Very Good |
2-5 days | 2 weeks |
| Priority Mail Express (USA) |
Excellent |
2-3 days | 1 week |
| International Economy |
None |
3-8 weeks | 10 weeks |
| International Standard |
Good/None |
2-4 weeks | 6 weeks |
| UPS International Saver |
Excellent |
3-6 days | 2 weeks |