... **What is the ATX 24-pin connector?** The ATX 24-pin connector is *the main power connector.* > **Which version of the ATX12V standard introduced the ATX 24-pin connector** > The version of the ATX12V standard which introduced the ATX 24-pin connector was *version 2.0.* > > **Why was the ATX 24-pin connector added?** > The ATX 24-pin connector was added *because extra power was needed by PCIe slots.* > > **What four additional pins does the ATX 24-pin connector have that the original ATX 20-pin connector doesn't have?** > The four additional pins that the ATX 24-pin connector has which the original ATX 20-pin connector didn't have are: > 1. A common ground. > 2. 3.3 Volt. > 3. 5 Volt. > 4. 12 Volt. > > **What did the ATX 24-pin connector make unnecessary?** > The ATX 24-pin connector made *the auxiliary power cable* unnecessary. ...