Im not. Look at the white plug there, around the bottom left corner of the two cards. that of the m1710 is further left, more space for the 7900 gtx, wheres a 7900 gtx in a m170 would cover that white plug.
Yes a 9400/E1705/M1710 form factor vid card will COVER this connector. You need to probably remove the connector and solder directly with LONG wires since you'll essentially be tying the top cover to the bottom casing.