The VIC-1005R is a 3-slot expansion backplane for the VIC-20 computer system.
The VIC-1005R (Reloaded) is a reimagination of the original but customized for the various "reloaded" VIC-20s that have a vertical (Atari 2600-like) expansion connector. It uses two boards -- the expansion connector board and the multi-slot backplane -- connected by a 2x25 IDC ribbon cable. It includes a reset switch and separate fuse to protect the backplane.