Most GTX 1050 models don't require a PCIe power connection. If yours does, you could use a Molex to PCIe adapter. The GTX 1050 doesn't draw a great deal of power, so your current PSU should be fine powering it.
Most GTX 1050 models don't require a PCIe power connection. If yours does, you could use a Molex to PCIe adapter. The GTX 1050 doesn't draw a great deal of power, so your current PSU should be fine powering it.