Which power supply is an updated version of the AT but still considered obsolete?

The Advanced Technology (AT) power supply is indeed an older standard that has been largely phased out in favor of newer designs, such as ATX. This type of power supply was prevalent in the early days of personal computing but has been rendered obsolete as technology has advanced.

AT power supplies required manual switching to turn the computer on and often had issues related to airflow and cable management compared to what we have today. In addition, the ATX and its successors provide better support for newer technology, including power management features and a modular design allowing for improved organization of cables.

While the ATX and its variations, such as the ATX12V and EPS12V, offer enhancements over the original AT specifications, understanding that the AT itself has been replaced and is no longer used in modern systems is crucial in the context of IT specialists, as it illustrates the evolution of technology and the importance of adapting to current standards.