Lenovo 65W notebook charger desk mount

I could not find a suitable model for mounting my 65W Lenovo charger to my desk with double-sided tape. I quickly modeled and printed this version and it seems to be working. 
 

I used brim and minimal support as shown in picture. It looks ok and took about 2 hours. Please be mindful that it's my first model and I'm a newbie on 3D printing.

Printer: Ender 3
Nozzle size: 0.4mm
Layer height: 0.2mm
Material: PETG
Brand: Devil Design