It had an Intel 80286 CPU running at 8 MHz and 512 KB (expandable to 1024 KB on the motherboard) of RAM, featuring a 5.25" floppy drive and a 20 MB hard drive.

[2] The computer had room to install three disk units, as opposed to only two on the M24.

It was possible to install a 70 MB hard drive, a 80287 math coprocessor and an enhanced CGA compatible graphic card capable of displaying 640 × 400 pixels with 16 colors.

[2][3] The Olivetti M28 was rebranded as the AT&T PC 6310 by AT&T in 1987 and sold on the US market.

This computer hardware article is a stub.