Portwell-Laxsons India Pvt. Ltd. Supplies Fanless Design Power Supply. Portwell-Laxsons India Pvt. Ltd. Has been awarded ISO 9001 certifications. Fanless Design Power Supply is provided with the feature of 8~36VDC operation. Fanless Design Power Supply is used for 1U or higher system. The model no. Of this fanless design power supply is GADIWA-3160.