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Amazon.com: USB Programming Cable for Logitech Harmony 300, 350, 510, 520, 550, 620, 628, 659, 670, 680, 688, 720, 745, 748, 768, 785, 880, 885, 890, 890 PRO, 895, 900, 1000, 1100 Remote Controls (3 FEET) : Electronics
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ReadyWired USB Cable Cord for Logitech Harmony 300, 510, 520, 550, 620, 628, 659, 768, 1100 - Walmart.com
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