Having purchased a Garmin Drivesmart 61, I received 2 USB cables in the pack, one long and the other short.. However when connect the Satnav with the long one to a USB HUB, I received the message that this cable cannot charge the Satnav. But using the short cable will charge it I also get the same negative message with other USB cables so it would appear that only this short one will charge the internal battery! Anyone else have this experience?