Star Tech. com Socket 7/370 CPU Cooler Fan with Heatsink and TX3 and LP4 Connection This startech. com socket 7/730 CPU cooling fan optimizes heat dissipation and removal by combining a large heatsink and 5cm brushless ball bearing Fan. It is designed to provide quiet cooling to socket 370(PPGA) Celerons, socket 7 Pentiums, AMD K6, K6-2 and Cyrix chips. With a high efficiency Fan blade design capable of moving 9 CFM of air, the fan draws power using a 3-lead TX3 connector that plugs directly into the motherboard, allowing the system to monitor fan speed and operating status, and includes a 4-pin LP4 adapter to maximize compatibility with existing power supplies.