Announced in October 1992. They came with either with 486SX-33 or
486DX-66 processors, could hold up to 32MB of RAM on the system board,
and had XGA-2 adapters, not on the planar, but as seperate cards. In
standard configuration (8MB RAM, 212MB harddisk) the SX model cost
$4,153, the DX2 model $4,920. Compare the prices of the
70, only four years earlier.
The new Premier PS/2® 76, 77 and Ultimedia™ M77 are full 32 bit 486 Micro Channel® systems designed to enhance the PS/2 product line at very attractive prices.
…These systems are offered in two mechanical packages, the PS/2 76 provides 3 slots (2 slots available for expansion) and 3 bays (1 available for expansion) and the PS/2 77 and M77 provide 5 slots (of which 4 slots on the 77 and 3 slots on M77 are available for expansion) and 4 bays (of which 2 bays on the 77 and 1 on the M77 are available for expansion).
…Standard features on these new systems include a SCSI Controller with larger and faster hard disk drives, video is provided via the XGA-2™ Display Adapter/A designed to meet the International Standard Organization (ISO) requirements, support for up to 32MB of 70 ns memory on the planar, two 9-pin serial ports, A high speed DMA parallel port and OS/2 2.00.1 installed on the hard disk drive and ready for use in a standard configuration. The enhanced IBM mouse is a standard feature in all the systems. In addition, M77 Ultimedia Models come with a CD-ROM, built-in audio functions and a variety of Ultimedia sampler applications.
The systems support up to 32 MB of 70-ns memory on the planar in four SIMM sockets. All systems ship with one 8MB single in-line memory module (SIMM) located in SIMM socket 1 leaving three SIMM socket available for memory expansion.
I bought two of these computers in a lot in December 2005. Both are of type 0NA, which stands for 486DX2-66, 8MB RAM, 212MB harddrive, but both have been upgraded over time, the first one more than the second one:
Both have the inevitable token ring adapter.