Can this just connect directly to a 12v DC supply or does it need to be a dedicated fan supply/connector?

You can connect the Noctua to a 12v DC supply. You need to identify which leads on the Noctua are 12V and Ground. The colour code is not obvious. The Noctua does come with a short 12v + Ground cable to adapt the pins to whatever plug you are connecting too. It comes with handy Scotchlok connectors to facilitate this.

Which way round to install, blow ambient air onto the hot area or 'suck' air away from the hot area ?

Only true answer is try both ways and see what works best for your setup, I have mine blowing on the components but they are right next to an intake fan

Could i rewire this to a gpu ph2.0 mini 4pin? the 40mm fan on my motherboard is dodo, but uses this connection instead of a standard 3/4pin header.

As long as you know which wire is which on your motherboard yes absolutely

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🌬️ Cool down in style with Noctua's silent revolution!

PRECISION SPEED CONTROL - 4-pin PWM for tailored performance.
VERSATILE COMPATIBILITY - Perfect for 1U servers and network devices.
WHISPER QUIET OPERATION - Experience cooling without the noise.
LONG LASTING RELIABILITY - Over 150,000 hours of MTTF.
COMPLETE INSTALLATION KIT - Everything you need for a seamless setup.

The Noctua NF-A4x10 PWM is a premium 40x10mm quiet fan designed for optimal cooling performance in compact spaces. With a maximum speed of 5000 RPM and an ultra-low noise level of just 12.9 dB(A), it’s perfect for 1U servers, routers, and NAS devices. The fan features advanced acoustic optimization and includes a comprehensive installation kit for easy setup.

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Brand	Noctua
Product Dimensions	4 x 4 x 1 cm; 170 g
Item model number	NF-A4x10 PWM
Manufacturer	Noctua
Series	NF A4x10 PWM
Colour	beige / brown
Computer Memory Type	DIMM
Voltage	12 Volts
Are Batteries Included	No
Item Weight	170 g
Guaranteed software updates until	unknown

NoctuaNF-A4x10 PWM, Premium Quiet Fan, 4-Pin (40x10mm, Brown)

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