DSM 6.2.3 will not work with these drivers, if you install or update you will fall back to "native" drivers that come with DSM, like no realtek nic on 3615/17 but on 918+ or no mpt2/mpt3sas on 918+ or no broadcom onboard nic on HP microserver or Dell server
read this if you want to know about "native" drivers
https://xpenology.com/forum/topic/13922-guide-to-native-drivers-dsm-617-and-621-on-ds3615/
synology reverted the changes made in 6.2.2 so the old drivers made for 6.2.(0) are
Hope this helps. If I mention a tool that you don't have l, just Google it and download it.
We will be using DS3617xs as it offers a bit more IMO. If you want to use a different model just substitute the extra drivers file, the serial number generator, DSM and loader files.
1. Download the loader https://mega.nz/#!zcogjaDT!qIEazI49daggE2odvSwazn3VqBc\_wv0zAvab6m6kHbA
2. Download the extra drivers http://s000.tinyupload.com/?file\_id=06641076704622277403