I-O Data PK-X486/87SL5-1 IBM SLC2 50MHz 286 to 486 PLCC CPU Upgrade Card RARE
For sale is a rather rare I-O Data PK-X486/87SL5-1 upgrade card for PC-9801 series computers, that will also likely function in Tandy 1000 systems. Card features a IBM SLC2 at 50MHz and Cyrix 87SLC-25 coprocessor.