The supply line (simple USB-A connector on one fairly thin cable) measures 1,20m.
Here should be taken before buying that this length is also sufficient. I would extend (ie one with its own power supply) because the fan used the cable in good conscience only to a powered USB hub 2.5 watts.
Operation with a USB power adapter was just as easy as using a 5600mAh Power Bank by EasyAcc at which the thing was running for several hours.
Just at the base price, the part is highly recommended in the office, if you do not have too high expectations on the quality of workmanship and material quality (both however is quite solid).
The product is, of course, no company called "CSL" or similar produced, this is just the name of the PC-shop, which sells the goods here. An image with the original packaging I will adjust.
When news (defect etc.) should result, I will update the review of course :)
So far, there are about two and a half weeks after use, no reason for complaint.
"Only" four stars for the product itself, but 5 for the low price.