Great module.
Works perfect with KPN fiber and Ubiquiti USG4 pro.
Fast delivery.

Recieved faster the expected. Working great in UDM pro with KPN (Netherlands) (Only need to set SFX speed to 1GB instead of auto in the UDM). Nice updates of order status. Added to favorit suplieers..

Great Compatible item. No issues

Great product, plug and play!
Nice packaging!
Great personal service by email!

Works great!

In hindsight I should have gone for the 'Generic' variant and fill in the 'Device Number' field. I did both at some point, but then press 'Add to cart' on a different tab I guess...
Nancy confirmed there would be no compatibility problems in advance with my Unifi Dream Machine - Special Edition (Ubiquiti UDM-SE), and had to deal with me not noticing certain questions the first time around... Thanks Nancy!

Leaving some breadcrumbs for others in my situation:
My ISP is Freedom Internet via KPN NetwerkNL. (WBA: KPN Wholesale)
For ipv6 to work the mtu on the ppp0 interface of the UDM-SE must be 1500, not 1492. You can not configure this via any GUI, be prepared to ssh into it and do it yourself: https://community.ui.com/questions/Feature-Request-UDM-Pro-PPPoE-RFC4638-1500-MTU-MRU-for-PPP/b5c1fcf6-bee5-4fc7-ae00-c8ce2bf2e724#answer/e1c5e332-97e9-4504-9987-945ec28a57a4

Definetely worth the money since not renting a modem-router saves me 2 euro a month!

Great SFP, used it with my UDM SE and is plug & play.