Acumen Hydra-Alert HRM EON-2027HS Instruction Manual page 85

Step 1: Clamp PC Interface & Charger Connector to your watch with one
other end connects with the PC Interface & Charger. Make sure the
three pins in the clamp are properly in contact with the three contacting
points on the watch. (as shown in Figure 1)
Fig.1
Step 2: Plug the USB connector to your PC with the other end to the PC
Interface and Charger. (as shown in Figure 2)
Fig.2
Step 3: The wording "PC LINK" on the watch means it is ready for uploading
or downloading. (as shown in Figure 3)
Fig.3
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