This is the cable that connects the system battery to the motherboard for Precision 7770 7780 17.3" Mobile Workstation series, the cable connects via 12-pin connector making it a plug and play replacement module.
D P/N: MK7CM, 0MK7CM
P/N found on cable:
DC020042Z00
HDC70_BATT_CABLE
Connector type: 12-Wire 12-Pin, Wire-to-board
Cable overall Length approx: 18.50 cm /7.60-inches
Reference Compatible with Laptop models:
. Precision 17 7770 Mobile Workstation
. Precision 17 7780 Mobile Workstation