personal computer by Apple

Second Class Macs are Apple’s somewhat compromised hardware designs. For the most part, they’re not really bad – simply designs that didn’t meet their full potential. The LC II (a.k.a. Performa 400-430) was a slightly less crippled version of the LC .

Instead of running a 32-bit 68020 CPU on a 16-bit bus, it uses the 32-bit 68030 CPU on the same 16-bit bus. This Using a slightly modified LC motherboard instead of a new design kept costs down – and the letters LC meant Low Cost.

The biggest improvement was boosting base RAM from 2 MB to 4 MB. The downside to this is that the only way to reach the 10 MB limit is by adding two 4 MB SIMMs. Yes, that’s right – you had to have 12 MB installed so you can use 10 MB!

Specs (via Low End Mac)

• Cpu: 16 MHz 68030
• Fpu: 68882 (optional, uses PDS slot)
• Performance: 1.7 (relative to SE, compare to 1.8 for LC , 2.9 for Mac IIx )
• Ram: 4 MB on motherboard, expandable to 10 MB using a pair of 100ns 30-pin SIMMs; can use 1 MB, 2 MB, and 4 MB SIMMs (cannot address more than 10 MB, even with 12 MB installed)
• L2 Cache: none
• Video: 256 KB VRAM, expandable to 512 KB; supports 512 x 382 and 640 x 480 resolutions (must have 512 KB VRAM for 8-bits at 640 x 480)
• Adb: 2 ports for keyboard and mouse
• Scsi: DB-25 connector on back of computer
• Serial: 2 DIN-8 RS-422 ports on back of computer