FSP DAGGER PM MIT 1200W Unboxing: SFX-L, ATX 3.1, 12V-2x6 Dual Platinum PSU

In this unboxing, we’re taking a look at FSP’s new SFX-L-sized DAGGER PM MIT 1200W SFX-L power supply. Manufactured in Taiwan (MIT), it has been certified by 80 PLUS and Cybenetics, and meets the Platinum 92% standard. It supports native PCIe 12V-2×6 graphics card power cables, features Japanese-made 105°C capacitors, a 120mm FDB fan, a black, fully modular textured cable design, an included ATX adapter bracket, and a 10-year manufacturer’s warranty.

FSP DAGGER PM MIT 1200W Power supply specifications:

Standard: ATX 12V Ver. 3.1 (SFX V4.1)
Input Voltage: 100-240Vac
Input Current: 7–14 A
Input Voltage Frequency: 50-60Hz
Dimensions: 125 x 125 x 63.5 mm
Fan: 120 mm FDB Fan
Power Efficiency Certification: 80 PLUS Platinum, Cybenetics Platinum
Noise Certification: Cybenetics Lambda A-
Power Cables: Fully Modular Textured Cables
Warranty: 10 years
Protection Systems: OCP, OVP, SCP, OPP, UVP, OTP, SIP, NLP
Cable Connectors: 1x 24-pin motherboard connector, 2x 8 (4+4)-pin CPU connectors, 1x 12+4-pin 12V-2×6 connector, 3x 6+2-pin PCIe connectors, 6x SATA connectors, 2x Molex (Peripheral) connectors

Table of Contents

FSP DAGGER PM MIT 1200W SFX-L PSU Unboxing

FSP’s new SFX-L power supply, the DAGGER PM MIT, has passed tests conducted by both 80 PLUS and Cybenetics—two efficiency certification bodies—and earned Platinum certification, offering users of ITX computers and similar systems a compact, high-performance power supply option. According to the official website, only the 1200W model is currently available; no lower-wattage versions have been released.

In addition to its standout feature of packing 1200W of Platinum-level efficiency into an SFX-L form factor measuring 125 × 125 × 63.5 mm, it also complies with the Intel ATX 3.1 power supply specification, supporting a maximum Power Excursion of 200%, and employs a high-efficiency LLC Full-Bridge + SR + DC-DC circuit architecture to deliver stable power and more precise voltage control. The official website highlights that it is "Made in Taiwan (MIT)" and offers a 10-year manufacturer’s warranty.

△ FSP DAGGER PM MIT 1200W SFX-L PSU.

△ 電源線材規格與數量。

△ Power Supply Features and Specifications Table.

△ List of accessories.

△ ATX-to-screw-hole adapter mounting plate.

△ 中間的是電源測試工具，安裝分體水通電前可以用來測試整個系統水路。

The FSP DAGGER PM MIT 1200W power supply measures 125 x 125 x 63.5 mm; the length of the unit that occupies space in the case’s power supply bay is 125 mm, which, compared to standard ATX power supplies, leaves more room inside the case for cable management.

The official website states that the power supply uses a Ø 120 mm FDB fan and features a “semi-fanless” cooling design, commonly known as an “intelligent fan stop” function. When the system load falls below 30%, the fan stops running completely, balancing cooling efficiency with the need for quiet operation. Internally, the high-efficiency heat sink is in direct contact with the chassis, effectively improving overall cooling efficiency.

△ The power supply is cooled by a Ø 120 mm fan.

△ The power cord is 125 mm long.

△ AC/DC specifications and notes on use.

△ There is no switch to disable the smart fan stop function at the cooling vents, meaning the "Semi-Fanless" feature cannot be turned off.

△ Overview of all modular cable slots.

The FSP DAGGER PM MIT 1200W features textured, fully modular cables, and both the official website and the packaging clearly list the cable lengths for reference. This information is particularly important for compact PCs where every bit of space is at a premium.