This Chassis allows up to 16 1×4 or 2×2 switch modules. Modular construction allows smaller configurations that may be expanded later by adding more modules. 2, 4, or 8 wire modules with CAT5 RJ45 connectors. Add Switch Modules to complete the system.

Features:
Individual 1×4 or 2×2 modules.
LED Front Panel Display of switch points.
Optional Manual Control.
Remote control from LAN, GPIB, RS232 or USB.

Dimensions:
19″ Rack Mount (483 mm)
15″ deep (381 mm)
5.25″ (3 RU) high (135 mm)
Weight: 15 to 20 lbs (7 to 10 Kg) max
AC Power : 75 Watts max. 110/220 selectable.

link to switch module selector