Original Apple branded 256KB 100ns 68-pin VRAM module for the Macintosh LC and LC II.
This is the default minimum VRAM on the LC and LC II (there is no built in VRAM) and offers support for display resolutions of 512x384 with 8-bit colour or 640x480 with 4-bit colour. The VRAM could be upgraded to 512KB by replacing the 256K module with a 512KB module to offer display resolutions of 512x384 at 16-bit colour and 640x480 at 8-bit colour.

The Macintosh LC III (and Performa equivalents) has 512KB of VRAM built onto the logic board plus a single VRAM slot. Although 100ns VRAM may work in the LC III (Apple themselves stated VRAM should be re-used when upgrading from an earlier LC to the LC III), the official specs list VRAM requirement as 80ns. The LC 475 requires 80ns VRAM SIMMs.