Sanwa Supply CB-CTERD5
The biggest and hardest problem to attain a clean desk is cable management. Hiding the power bar and keeping all my cords neatly tied together in one place was a priority. To accomplish that, I bought this black mesh cable tray from Sanwa Supply named CB-CTERD5 at AmazonJP. It is long enough to hide the power bar and wires very well.
Since the tray can be easily opened like this, you can quickly access and manage them. And I screwed the power adapter to the back of the countertop. I have another cheap tray for storing cables that are not always necessary like an HDMI cable and USB-C cable for charging power.