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IBM PS/2 Model 50

8550 · 1987–1989 · desktop

Specifications

Cpu: Intel 80286, 10 MHz
Ram: max: 7 MB via IBM memory expansion options · base: 1 MB on the system board
Ports: Micro Channel Architecture (MCA) expansion slots ×3 · Serial port · Parallel port · PS/2 keyboard port · PS/2 mouse port · Onboard VGA out
Display: Onboard VGA: 640x480 in 16 colors or 320x200 in 256 colors
Storage: base: 20 MB hard drive plus one 3.5" 1.44 MB floppy drive · options: 30 MB hard drive
Os Support: latest: OS/2 1.x, PC DOS 5.0 / early Windows 3.0 ran on later 286-based configurations · shipped: PC DOS 3.3
Release Price: $3,595

Upgrade paths

RAM

7 MB via IBM's proprietary MCA memory expansion cards · MCA was a closed, licensed bus, so third-party memory options were far more limited than on ISA-based clones.

varies, IBM MCA memory cards commanded a premium over standard ISA memory of the era

MODERATE

storage

30 MB internal hard drive via the MCA-based ESDI/IDE controller options IBM offered · Standard ISA hard disk cards did not fit the MCA slots, so upgrades required MCA-specific controllers.

MODERATE