Ruth's sister 300W SFX internal power cable

300 W SFX power supply for small chassis

This 300 W SFX unit fits Mini-ITX and all-in-one cases where space is tight. It targets builders of compact desktops, HTPCs or point-of-sale machines that need a standard SFX footprint. The non-modular design keeps cable routing simple in very small enclosures. It delivers 300 W across the 165–265 V input range.

20+4 pin ATX and fixed cable limits

The 20+4 pin motherboard connector, a 4-pin CPU plug, two 6-pin PCIe leads, three SATA and three D-type plugs are all permanently attached. You cannot remove unused cables, so plan routing before installation. The 300 W ceiling and two 6-pin PCIe connectors restrict graphics choices to lower-power cards. Active PFC helps maintain efficiency across the input voltage span.

Non-modular build with dense connector cluster

All leads exit the housing together, creating a thick bundle that must be folded behind the motherboard tray in tight SFX bays. The fixed 4-pin CPU connector reaches most Mini-ITX sockets without extension. Three SATA ports serve a typical compact drive complement. No 80 PLUS badge is present, so efficiency sits at the basic certification level only.