Solid logic technology (SLT) module
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.
International Business Machines Corporation (IBM)
||5862859 B 5385 52
||Located on both black plastic connectors, obverse-side
||Located on left-hand black plastic connector, reverse-side
overall: 5/8 in x 3 1/2 in x 3 in
SAP Collection, Computer History Museum