1990 Macintosh Portable PSRAM Expansion Card 3MB p/n 661-1613 see description for Sale

1990 Macintosh Portable PSRAM Expansion Card 3MB p/n 661-1613 see description For Sale

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1990 Macintosh Portable PSRAM Expansion Card 3MB p/n 661-1613 see description:
$99.99

New info! Numbers found on board may be either 820-0662-A or 820-0662-01. The following part number along with a photo of this module was found in the 608 pg Apple module identification on page 122. Apple P/N is 661-1613. It is not found on the board. While researching this card I found the following relative to the 3 MB card, \"Your PSRAM card is shown in the Apple Service Guide, Macintosh Computers Vol. 1 (1993) on p127. It is quite distinctive, in that the rows of six staggered chips follow the oblique upper edge of the card. The 1MB PSRAM card has only four staggered chips.\" Untested as is.

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1990 Macintosh Portable PSRAM Expansion Card 3MB p/n 661-1613 see description For Sale

1990 Macintosh Portable PSRAM Expansion Card 3MB p/n 661-1613 see description: $99.99

1990 Macintosh Portable PSRAM Expansion Card 3MB p/n 661-1613 see description:
$99.99