ORIGINAL APC USB BACK UPS DATA CABLE - FOR ES700 MODEL | eBay
APC Back-UPS ES - BE700G-UK - Uninterruptible Power Supply 700VA - Test - YouTube
Amazon.com: Smart APC ups USB Console Cable QNAP NAS Cord Compatible for Synology APC 350 ES,550, ES 500,650,APC Back-UPS pro 700, 750 BE500R,3000,NS-1080,1500 XS,NS1250,BR1000G( AP9827 and 940-127B) : Electronics