When corporate IT departments and professional PC technicians needed to truly know what was happening inside a machine, they reached for QAPlus by Diagsoft — the gold standard of DOS-era PC diagnostics, used by over 2 million professionals worldwide.

What's included:

Original retail box

QAPlus manual (Advanced System Diagnostics)

Network Installation addendum sheet

5x 3.5" and 5.25" floppy disks (see note below)

What QAPlus does:

Full hardware diagnostics — CPU, memory, hard drive, ports, video, keyboard

Advanced system diagnostics beyond what any basic utility offered

LAN/Network support for multi-user environments

Version 4.61 with LAN Support

Originally a $159.95 professional product — serious software for serious technicians.

***⚠ Please Read — Disk Note:

The disks included are hand-labeled working copies, not original factory-pressed Diagsoft disks — a common practice in professional DOS-era IT environments. Serial number R 4.61 / SN 10674 is written on the labels. The box and manual are original retail items.

This lot is ideal for display, collection, or archival interest rather than as a pristine factory set.

Sold as-is — no returns on vintage software.

Ships carefully packaged.