TCS European Harness MC-5"-21 ~ 7 Pin JST To 21 Pin Motherboard 1357
The MC-5"-21 is an adapter harness with 5" (12.7cm) wires used for connecting a 7-Pin JST to a 21-Pin motherboard.
7-Pin JST decoders such as the MC2 and MC4 may be adapted to interface with NEM660 (21MTC) via this adapter harness.
