This is definitely not your normal PSU, this is a DC-DC PSU, needing an external power source to feed it. The PSU is no bigger than the ATX connector itself, with connectors just enough to power a small ITX-based system. it has five(5) connectors: four(4) cables for +12v, +5v and GND wires for two(2) four-pin Molex plugs and a single floppy drive connector. This kind of PSU will be great for people who likes small and silent systems, and also for modders who has a nick for making really small creations. Oh btw, once you check the link below, stroll around the site as well and see lots of amazing products there.
Introducing picoPSU-120, world's tiniest 12V DC-DC ATX power supply unit (PSU)
Compact design, less cables. The picoPSU-120 is the smallest snap-in ATX dc to dc power supply. The picoPSU is compatible with an entire range of mini-itx motherboards as well as regular boards. The picoPSU-120 provides a cool, silent 120 Watts of power for small PC designs using a single 12V power source.
By using Patent Pending HyperWatt[TM] technologies , picoPSU-120 packs an impressive amount of power relative with its very small footprint.
Small computer projects start with small power supplies. PicoPSU-120 is a crucial key component that unleashes the ultimate power solution for general purpose computing platforms. PicoPSU-120 is fully ATX compliant, making it an excellent candidate for any silent, 12V DC-DC computer project.
Reduce space. Eliminate 20 unnecessary wires by plugging in directly into the motherboard ATX connector. The picoPSU-120 12V dc-dc ATX converter was designed from ground up to fit small form factor ATX boards, allowing enclosure designers to save space while not compromising power requirements.
Cool power. Operating at only 12V, the picoPSU-120 dc-dc ATX power supply delivers 120 Watts of power. picoPSU provides plenty of power (via ATX connector and HDD cable harness) for CPU and an entire range of peripherals.
100% Silent The picoPSU-120 mini PSU is a 100% silent dc to dc solution. No fans, no noise, just power for small and silent PCs.
picoPSU-120 is a fully compliant DC-DC ATX PSU. It can power VIA mini-ITX boards with C3 or C7 processors, P3, P4, Pentium-M, and AMD processors.
picoPSU-120 ATX DC-DC converter is very small, measuring just 31x45x20mm, about the size of two AA batteries, picoPSU-120 is also 1U ServerRack compliant. It's pico, indeed.
CE / FCC / VCCI Certifications: EN55024, EN55022 Class B (CE certification), Australia/New Zealand (using CISPR 22, EN55022), Japan (VCCI: using CISPR 22, ANSI C63.4), United States (FCC Part 15, Subpart B, Class B), Canada (ICES-003 using CISPR 22, ANSI C63.4).