The IBM P70 is a PS/2 Microchannel portable, often called “luggable”, 386 computer.  It had no batteries, which required you to lug a power cord along with it wherever you went.  It was a fairly sophisticated machine, having more in common with a high-end server than with other luggables of it’s day.  It came in 386DX-16 and -20 MHz speeds, with 30 MB, 60 MB, or 120 MB DBA ESDI hard disk options.  The display is a gas-plasma type, which means basically that it is an incredibly complex neon lamp.  This makes it one of the few modern computers that can be said to actually contain a vacuum tube!  The display/controller combination supports standard VGA resolution at 640×480 pixels (16 gray levels), and includes a 15-pin connector on the rear panel for an external VGA color monitor (16 colors supported).  CGA and EGA resolutions are also supported.  A maximum of 8 MB of RAM is supported on the system planar, with an additional 8 MB on a memory expansion card in one of the two microchannel slots.  One 16-bit and one 32-bit Microchannel expansion slots are provided, along with a socket for a 387DX math coprocessor. This IBM P70 is still working by booting up to DOS and selling for $325