As an Amazon Associate, we earn from qualifying purchases. Home » QSI » QS3390QM QSI . QS3390QM QSI . QS3390QM Attributes Brand name, Manufacturer name, ManufacturerQSI Distributor offers SellerSKUMOQIn stockMultiplePrices Rochester ElectronicsQS3390QM3001 @ $1.12, 25 @ $1.04, 100 @ $1.00, 500 @ $0.96, 1000 @ $0.91