The difference between RP-WD007 and RP-WD009
1) One key backup speed improve to 14~18 Mb/s from 7-12 mb/s when your are using high speed SD card.
2) Overheating： Solved
3) Battery Capacity changed to 6700 mAh from 5200 mAh
4) User Manual: upgrade
5) Type C port replaced by Micro USB port
6) The problem of app: solved most of them and still working on the rest.
The difference between RP-WD03 and RP-WD009
1) RP-WD009 is updated with faster seepd which can instantly converts a wired network to wireless with super-fast speeds of up to 433 Mbps Wi-Fi over 802.11ac and 300 Mbps on 802.11n connection.
2) Better APP and more stable.
3) Additional Function： One key backup speed up to 14~18 Mb/s which is useful for the customer who need to transfer the files from SD card to portable hard drive.
Supporting to reading USB hard drives up to 3TB and SD/SDHC/SDXC cards up to 256GB.
Perfect for when you need to free up space for Android or iOS devices.
Up to 5 mobile devices can connect simultaneously allowing you to stream media from the SD or USB drives, or you can directly share files between two different storage devices.
As a portable router, you can turn any wired network to wireless, or connect it via a DSL or cable modem.