The 3050 micro with 65w PSU and 35w CPU may be too underpowered to be a media server. I remember a complaint at a business with the micro they had was that the USB's didn't even seem to have enough power.  Something to the effect of use one USB, can't use the other. There are micros with more power.  5070 micro has 90w PSU, but still 35w CPU.  7070 has 130w PSU and 65w CPU.  But are they good as media servers?  Not sure.  I think you'd have better luck with an SFF or MT.  Back to the 3050, the SFF has 180w PSU.  And more impressive is the 7080 micro with optional 180w PSU with 65w CPU.  So if you wanted to stick to micros...  I haven't seen any power complaints on the models with better PSU's. So there's some info for you to go on.  Spec sheets for the above models can be Googled.
Hi - first post. Just bought this little micro to use as a media server, and was surprised at how sluggish it is (despite having the 7th Gen 7500T processor and 8GB Ram). I ran some benchmarks and it was very very low scores - CPU-Z was 350.4 for multi threads. Quick shockingly low. Is this is sign of a failing CPU or are they just like this? Is there anything I should be doing to improve this? 
Optiplex 3050 micro - CPU performance