Is the Antec HCG 400 enough for a GTX 1060 STRIX?

Cables and pins are never a problem if there is sufficient wattage and voltage eBay sells the adapter plugs cables and pins for like a dollar a piece!

its a 120 watt card so up to 75 comes form the slot and the rest from the 6 pin cable. So it depends what other hardware you have installed and how much load you are putting on other ports such as usb's. the recommended minimum is a 400 watt psu this does not mean 400 watts is enough, its just a best guess at the MINIMUM(see the specs for the gtx 1060 below) as for the pins, the cards all take 6-pin pci-e and most low wattage psu's would provide just one 6 pin pci-e connection. There are gender benders available to change to 6-pin anyway and most psu's have convertible 8/6 pin cables. the ANTEC website only lists their latest High Current Gamers units. If it were me I would buy a bigger psu especially if you have a full box or use external usb's all the time. from the 3rd party review link below it looks like it will fit.

I can't find any information on the cabling - if it has an 8 pin PCI-e connector, is will probably be OK, but I wouldn't choose it as a first option. The wattage is only just about sufficient