External dock is the best bet IMO.
Something like this but Apple specific (or at least thunderbolt/miniDP specific)
Sabrent USB 3.0 Universal Docking Station with Stand for Tablets and Laptops supports Windows & Mac (DS-RICA) https://www.amazon.com/dp/B013WQWCEA/ref=cm_sw_r_cp_api_pWfmAbT4VEMD5
Ty ! Well atm it will be either the D1000 from Dell or this one : https://www.amazon.com/Sabrent-DS-RICA-daccueil-ordinateurs-portables/dp/B013WQWCEA/ref=sr_1_1?s=electronics&ie=UTF8&qid=1486647122&sr=1-1&keywords=Sabrent+DS-RICA# I still dont know which one is better and how.
check this one out, don't know if it'll work for you so do your own research.
https://www.amazon.com/dp/B013WQWCEA/ref=cm_sw_r_cp_awdb_imm_KD4MTC41ASTBVG6SN8G1
Yes these exact ones.
We purchased a few of these to test with too. But I'd say 3/5 failed after 3 months or so.