That's the selling point of the 1650: no power cable, and maxes out at 75 watts under full load. It replaced the IIRC 1030, which until the 1650 came along, was the best choice for tight case, ultra low wattage power supplies.
In hindsight, this SkyTech for $499 was likely the desktop steal of BF/CM. A few folks priced out the parts, and it came to at least $500 WITHOUT including the Windows license.
Intel Core i5 9400F Coffee Lake 6-Core 2.9 GHz (4.1 GHz Turbo)
Thermaltake Versa H18
Stock Air Cooler
3x 120mm RGB LED Fans, 1x Rear Fan
8GB DDR4 Gaming Memory 3000 MHz
Nvidia GeForce GTX 1660 6GB
Primary Hard Drive:
500 Watt 80 Plus Certified
Windows 10 Home, 64-bit
1-Year Lifetime Tech, Parts, Labor & Shipping Support
Dimensions (H x W x D):
15.4" x 8.1" x 15"