IBM 7546 Industrial Computer — a ruggedized Micro Channel OS/2 system, originally deployed as part of a PT2090-series equipment installation.

This is an IBM Type 7546 Industrial Computer, IBM’s ruggedized Micro Channel platform built for plant-floor deployment (wide temperature range, shock/vibration rated). Serial number 7546-23A0338. If you’re sourcing a compatible spare for an existing PT2090 installation, this unit matches that hardware generation.

Tested and confirmed working. Powered on and verified booting to OS/2 with the original vendor application software intact and running (see photos of the unit powered on and running). Sold as-is; no data or software warranty is implied. If you have specific requirements around the installed software, message before buying and I’m happy to answer what I can.

Specifications

• IBM Type 7546 Industrial Computer, rack-mount chassis (front bezel with dual keyed locks — both original keys included)

• Micro Channel planar, 386SX/486SLC-class (see board photos for exact FRU/part markings)

• System memory installed (upgradeable to 16MB on-board per IBM spec)

• Internal 80MB SCSI fixed-disk drive, installed and currently running OS/2 + original vendor application software

• IBM Realtime Interface Co-Processor Multiport/2 (512KB) serial adapter installed — used for external device communications

• Integrated SCSI, VGA, serial, and parallel ports; 5 Micro Channel adapter slots

What’s included

• IBM 7546 Industrial Computer unit

• Internal SCSI drive with OS/2 and original vendor application software installed

• Both front-bezel keys

Not included

• Keyboard and monitor (unit was tested with a generic PS/2-compatible keyboard and standard VGA monitor — any compatible keyboard/display will work; original spec called for an IBM 7544/7554 industrial display)

• Power cord, cables, mounting rails

Condition notes

Estate/decommissioned industrial equipment, sold as-is. Cosmetic wear consistent with age and service (see all photos closely). No returns on vintage electronics of this age unless item is not as described..

Shipping

This is a heavy industrial rack-mount unit (~35 lb). Will be double-boxed with foam/packing for freight-class parcel shipping. Local pickup also available in Visalia, CA 93277. Message before buying if you’d like a shipping quote to your location. I am happy to package the hard drive separately if preferred.