Can Guitar Hero Warriors of Rock (PS3) peripherals work with Rock Band 4 (PS4)?

So the questions says it all. I have GH WoR peripherals (Guitar, drums, mic) and would like to use them in Rock Band 4.
I know this comptability chart exists, and it says that the guitar should work, and the mic is like any universal mic.
But what bothers me is the drums. The guitar hero drums has 5 "buttons" while the RB type has only 4. However, I was wondering if anyone has experience using them (Even with some dongle or something) and can verify if that's possible, or a new set of items is needed (I know they don't make them anymore)
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Can I use PS3 Rock Band instruments on PS4?
Rock Band 4 on PlayStation 4 natively supports PlayStation 3 Rock Band instruments by means of the USB dongle that they require to operate.Can you use PS3 guitar on Rock Band 4?
NOTE: PlayStation\xae3 controllers do not work outside of Rock Band 4. You will have to navigate into the game with your regular controller and then join in as your legacy instrument controller at the start of the game.Do PS3 Guitar Hero guitars work on PS4?
They work fine in game but don't do any ps4 dashboard stuff.Can you use a Guitar Hero guitar for Rock Band 4?
While the new Guitar Hero won't be supporting older peripherals, Rock Band 4 will be picking up the slack, supporting instruments from the last generation Rock Band games as well as the older Guitar Hero titles.Using Guitar Hero 3 PS3 Controller on Rock Band 4 PS4
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