Brook released the sniper and one of the ancillary features is the usb port on the back. It basically acts as a Brook plug and play auto detect Universal Fighting Board. I’ve tried every unboxed stick & pad I own from various consoles at it and so far it works on the PS4 and is hot swappable. Also there is a 3.5mm input for audio\voice on PS4, an easier way to use your 3.5mm headsets with sticks and pads lacking this option and for folks not using USB\BT headsets.
•End goal is to provide a comprehensive list of everything you need to know about this converter and with it’s unique properties I believed it was owed its own thread. As I have more time (If you own the Brook Sniper as well feel free to post your own discoveries or tests and I’ll update this OP) with the sniper I plan to test & upload video(s) on the following;
 Will use the 60fps recorded video method on USFIV & then SFV per pad/stick.
 Will test input lag with eTokki PSXto360 & Brook PS2toPS4 adapter.
[*] Will compare input lag with a native PS4 stick plugged in directly to the PS4 and the same PS4 stick plugged into the Brook Sniper as a pass through.
Compatibility With Other Consoles
[*]360, XB1, PS3, PC & MAC
Disassembly & The Guts of This Device
 Mini UFB inside?
[*] Can it be scaled down and used specifically for the converter and 3.5mm headset properties?
 I can see the Sniper being used at your local eSport Centers or even zealous TOs. Mount two of these adapters near/to each PS4/Console and advertise the ability for customers/contestants to bring the Stick/Pad of their choice from any console. Or Keyboard & Mouse for the FPS crowd or that one player you know that prefers playing SF on their keyboard.
 Players with multiple adapters can consolidate into this one adapter albeit a larger form factor, unless we find we can scale down the adapter’s pcbs.
 Brook future support for Tournament Mode, I’ve tested some Macros for Keyboard\Mouse on a FPS but haven’t tried creating a Macro for SFV.
 The micro USB has a USB that has another USB piggy backed onto it. Only 1 of the USB’s need to be plugged into the console, the other USB is only needed if your KB&M draw enough current to require it or the Gamepad\Arcade Stick port draws enough current to require it. Only plugging in the primary USB frees up the only other USB port available on the original PS4s. A powered USB hub can be used here as needed as well.
 I can use my mechanical keyboard as a hit box! Kind of, worked fine for shotos but I could not register a 360 motion in SFV? Will try USFIV and other fighters\consoles.
 Pad\Stick and KB&M all remain under 1 PSN profile
 Hotswapping a Pad\Stick when a KB&M is plugged in doesn’t trigger a new PSN profile login (saves a few seconds of next user to just sit down and play instead of picking a PSN profile)
 Hotswapping a Pad Stick without KB&M plugged in untested
[*] 3.5mm Audio plugin support for PS4, untested for other consoles but brooks advertises it only works for PS4
I’very started a video series for Brook for providing this review unit from a FPS perspective;
The playlist will stay the same but will automatically have more videos on the playlist as the videos reach their scheduled date and time for public viewing.
 Unboxing Video @ 3/3/17[details=Spoiler]https://youtu.be/w8I0wEU7eTc[/details]
 Initial Impression for FPS/OW @ 3/4/17[details=Spoiler]https://youtu.be/Nh17RA3UrN0[/details]
 5 Weekly Videos @ 3/5/17 and every Sunday for 5 wk.'s, follows a Master Rank Overwatch player go from DS4 to a Corsair Strafe KB & a Razer Imperator[details=Spoiler][list]
 Final Impression for use on FPS/OW: Available after 5th week
 Comparison to Xim4 @ TBD
 Hotswapping Sticks and pads demonstration on PS4 @ TBD
 Various Input Lag test @ 4/20/17 more to come
 Razer Panthera with upgrade FW: 1.01 vs HFC4 & HRAPVX connected to the PS4 via Brook Sniper
**I Will update the first post with the new info as it’s created and post the new edits in the reply posts.
**If you own a Brook Sniper or have access to one anything you test or discover update the rest of us and I’ll add it to this OP.