Inspiron 3847 upgrades

Hi, I recently upgraded my pc by adding a gtx 1050. The psu for my pc is 300w. I've also recently bought a sentry 2 fan controller with a led screen. My psu didn't have a 4 pin molex cable, so I have purchased a sata to molex  adapter as have 2 free sata cables. The adapter is coming next week. Will my psu be able to handle these upgrades?