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The SPI250EP is a basic straight-through forced airflow design with an 80mm fan. The generic-gray casing looks identical to that used in Zalman and Nexus PSUs made by SPI (and/or its affiliate Fortron Source Power) some years ago when they were just about the only quiet PSU options around. The absence of a VAC selector switch is due to the auto-input voltage feature; the absence of a power switch is about saving pennies. The stamped grill is actually quite open, probably very similar in aerodynamic aspects to the more attractive circular wire grill.
No switches on back panel.
The intake end of the PSU is nicely open and unrestricted to airflow. There would be no point making this vent any larger than it is.
The intake end is nicely unrestricted for airflow.
CABLES AND CONNECTORS
There are five cable sets, all of which are very short. The PSU is meant to go into a small, modest system.
- 12" cable for main 20+4-pin ATX connector
- 9" cable for 4-pin AUX12V connector
- 1 x 13" cable with one 4-pin IDE drive connectors
- 1 x 18" cable with two 4-pin IDE drive connectors and one
- 1 x 20" cables with two SATA drive connectors
All the cables are short.
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