Switchable passive multiple
The SSSR Labs Mult 2×4 is a passive multiple module having switchable configuration: 2×4 or 1×8. This module has the smallest possible width: only 2hp, which perfectly allows it to fit yet another gap in a modular synthesizer with useful function.
The color coding helps user to select desirable operation mode.
Black lines, left switch position: Dual 4-terminal multiple.
Blue lines, right switch position: Single 8-terminal multiple.
http://sssrlabs.com/en/store/sm000/
Available as an assembled Module and as a DIY project.
No info about availability.
$35