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Amazon.com: UpBright 48V AC/DC Adapter Compatible with Cisco 7800 Series CP-7811 K9 CP-7821 CP-7841 CP-7861 CP-7821-3PCC-K9 CP-7841-3PCC-K9 CP-8831 CP-8831-3PCC-K9 IP UC Phone 44-57VDC 48VDC Power Supply Charger : Electronics
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Amazon.com: 48vdc Power Supply, 48v Power Supply Compatible with Cisco Phone Models 8811, 8841, 8851, 8861, 8961, 9951. : Electronics
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