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A AZTECH Compatible Toner Cartridge for HP 42A Q5942A Work with Laserjet 4250 4200 4350 4300 4250N 4240 4350N 4250TN 4250DTN 4350DTN 4350TN Printer Ink (Black, 1-Pack) - Walmart.com
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Amazon.com: HP 42A Black Toner Cartridge | Works with HP LaserJet 4240, 4250, 4350 Series | Q5942A : Office Products
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Amazon.com: HP Original 42X Black High-yield Toner Cartridges (2-pack) | Works with LaserJet 4240, 4250, 4350 Series | Q5942XD : Electronics
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