This sale is for an Atari 400 that has been tested and is mostly working.  The only issues are that a few of the keyboard keys don't work and the machine isn't pretty (I bought this from a junior high surplus sale years ago.).   Otherwise, all is OK.  

Here is what I know about this machine:

• Cartridge slot works fine.  I tried my BASIC and Missile Command cartridges and they both loaded OK.
• I played the Missile Command game and found that joystick ports 1 & 2 work.  I have no way to test ports 3 & 4.
• The START, SELECT, & OPTION keys all worked while playing Missile Command.
• The computer communicates with my 810 disk drive.  It loaded in an autoload program from disk, after which I listed the program to show that it had actually loaded. 

Please refer to the photos above as support for these statements.

This is priced to sell (the parts alone are worth the price);  I am liquidating all my Atari 8-bit equipment, want to do so quickly, and so am asking a low price.