I recently found a Lexmark "Lexbook MB10", which is an interesting 8088 laptop.
Screen: monochrome 80x25 (?), 8.25" diagonal Speed: user-varied, up to 10 MHz (?) Power: 12v DC, 0.8 amp, positive tip RAM: 1280K (uses about 704K for MSDOS, the rest is RAM disk?) Mouse: built-in mini-mouse, uses a mouse "key" (sort of like a joystick) (see lower right corner of keyboard). keyboard has left and right click buttons (left of spacebar). Ports: one 9-pin Serial; one 25-pin Parallel; earphone jack PCMCIA: two type I (or II?) (configured as drives A and B) Battery: internal Ni-Cad; three button (CR-22?) Indicators: LCD strip above keyboard with seven indicators: B drive access, Caps Lock, Num Lock, Scroll Lock, button batteries low, main battery low, and A drive access. ROM software: PowerPad Systems BIOS 1.08 (1995) PacRim parallel-port floppy driver MS-DOS Version 5.00 Stacker (?) ? Sticker on bottom: Model No: MB1378519 (or: MB1878519? (second digit smudged)) COMPUTER 12 VDC 0.8A Serial No: 000xx (two digit serial number!) 08-Feb-94 MADE IN USA FCC ID. IYL1378519
The bootup also says "running on MiniBook PC".
My Lexbook came with a 1 MB PCMCIA memory card in drive B, which has a set of software (word processor, InstaCalc). (more later)
Note: this appears to be a different machine than the Lexbook SE10.