IBM Portable Personal Computer 5155 model 68
IBM Portable PC 5110
I am really not sure what happened to the other 67 versions of the IBM portable. IBM must have been very thorough.
Original press release: “The IBM Portable Personal Computer 5155 Model 68 consists of a lightweight case with a carrying handle containing a built-in. 9-inch, amber composite display, one 5 1/4-inch double sided diskette drive (with space for an optional second drive), and two IBM Personal Computer attachment options (diskette adapter and colour/graphics adapter).
The unit also has a new, lightweight keyboard and a universal power supply. The system board is the same as that of the IBM Personal Computer XT with 256Kb of memory that is expandable to 512Kb using the memory expansion option.
Five expansion slots are available for the connection of most IBM Personal Computer options. The system has identical function and performance characteristics to an equivalently configured IBM Personal Computer.”
Specs
Basically an IBM PC-XT – Intel 8088 @ 4.77MHz
256K of memory.
Twin Floppy disk drive (or single)
80 x 25 Text display (CGA)
Weighed 30lb.
US $4225 at launch
Original IBM portable rear
Expansion slots – ISA
I never owned one of these, and frankly never wanted to.
Alex at “Geek with Laptop” described the 5155 as hideous in this article
“But what did they [IBM] get so hideously wrong? Nothing much, apart from the fact that its “Portable” weighed in at a breezy 13.6 kilograms had a 9-inch screen that did little of great note and costed a very generous $ 4000. More to it, you had to plug it in for charge as it had no batteries inside. Okay, so the 5155 was in fact just a movable desktop and thankfully IBM put an end to this monstrosity within a year”