Are the two broken wires part of a USB connection to CON1? I so, I'd guess they are the D+ and D- wires. Counting the CON1 terminals from the left, 4 and 5 appear to be marked D+ and D-.
Googlng USB wire colours, not all USB connectors seem to use colours consistently. However, some show white as D+ and green as D-. Feeling lucky?