The above mentioned topic, namely cable management rings, is a very simple yet effective solution, to all the different cable management related issues, faced by many an individual and or organization. This simple yet effective ring, falls into the category of a no-nonsense cable management accessory, and is one, which is used to eliminate cable stress.
There are different types of cable management rings available in the market, and these varied rings, cater to all the different needs and or requirements of a variety of users. The primary reason for using this accessory is to prevent hardware damage, as also the resultant data loss associated with it.
Cable management rings form a part of the inventory of many companies, offering wholesome solutions, to improve the performance of networks and communication systems, sensitive electronic equipment, industrial equipment, and so on. One name that immediately comes to mind in this respect is American Power Conversion, or APC. This big timer has its corporate headquarters in West Kingston, and is ranked among the ‘Fortune 1000’ list of the largest US companies.  
It is a well known fact, that cable management rings facilitate some critical aspects of cable management, both within and outside the relevant racks. Two of these aspects include the subject of critical air flow within the rack, as also the access factor in a relatively clustered environment. Controlling of both these factors leads to enhanced performance, and with it lesser downtime.
There is an interesting cable management accessory, which works well in tandem with cable management rings. This ‘cable management ring bracket’ as it is called, can be easily mounted to the front or rear of any desired rack, and can handle various cable bundle sizes. It is a useful aide in both, vertical as well as horizontal cable management.
To end, it will be appropriate to say that, maintaining an organized and neat cable layout, within an enclosure or a rack, is the hallmark of cable management rings, and the effectiveness of this product, lies in its simplicity.