The DI Mass Connection Solution (set of two boards) is specially designed for faster system cabinet wiring. The DI Mass Connection Solution connects to existing M-series DI, 32 Channel, 24 VDC and Dry Contact cards (Series 2) by using two ribbon cables with 20-Pin connectors. The DeltaV™ M-series Mass Connection Solutions makes connecting field devices to DeltaV I/O Cards fast and easy.