Model 57 486 SLC 2
The Model 57SLC2 was a much more powerful system than the original Model 57SX or SLC systems. Featuring a 486SLC2 processor (as opposed to a 386SX or SLC CPU) operating at 50MHz internally, and featuring XGA-2 video on the system planar board, it offered much better graphics and system performance than did the 57SX/SLC.
I got mine from a nearby computer and electronics recycling event. Not only does it work perfectly, but it even has the original keys and key tag!
It's configured as follows:
IBM 486SLC2 CPU at 50MHz internal operating speed (25MHz external)
2.88MB Floppy Diskette Drive
240 and 730MB Quantum SCSI Hard Disks
16MB RAM (the most that's supported in this system)
Right now it's running Windows 95 because that's what it came with. I plan to change that, but I'm not sure what I'll replace it with. A project computer for now.