Solid Logic Technology (SLT) module
International Business Machines Corporation (IBM)
||5862859 B 6 460 7C
||Located on black plastic connector, obverse-side
||Incised on black plastic connector, reverse-side
overall: 5/8 in x 3 3/8 in x 3 in
One (1) SLT module type 5862859. The obverse-side of the module is covered by a variety of components, and the back by solder joints and circuit lines.
SAP Collection, Computer History Museum