Mount, Atari 600XL, Ultimate 1MB Upgrade

thingiverse

No-drill mount for installing an Ultimate 1MB Upgrade in an Atari 600XL. The U1MB board is installed above the parallel bus port. U1MB information and installation manual are found here: https://lotharek.pl/productdetail.php?id=56. You will need to remove or modify the upper and lower metal shields to use this mount. When reinstalling the motherboard, hold the grooves of the mount against the edge of the motherboard between the cartridge slot and SIO port. Two M3x5mmL screws and optional washers are required to attach the U1MB to the mount. After removing the shields, the parallel bus port cover will be loose as the metal fingers of the shield are no longer there. Print and insert the cover retainer over the port edge connector/circuit board and install the cover over it, centering the retainer between the ribs of the cover. If desired, you can apply glue or double-sided tape to secure the retainer to the cover. Photos show the early-model U1MB with black PCB and right-angle connectors. This mount has not been tested on the new version with white PCB and straight connectors. If a lower mount is needed, please let me know. The desired height from the top of the motherboard to the bottom of the U1MB must be measured, along with verification of the locations of and distance between the mounting holes of the U1MB.