Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Is there any input lag from the wireless connection?
Document: Very good product, meets all of my expectations.Syncs flawlessly to my controller and the software works as advertised.It works without lag or slowdown.
It also worked in some games that required Direct Input instead of XInput. So both functions worked fine for me.This isn't a knock on the product, but button mappings were a problem when trying to use with the PS3. It's possible to use for games that allow full button re-mapping, but most don't do that.TLDR:  It works.
It has two modes: X-Input and Direct. X-input mode emulates an Xbox 360 controller, whereupon the rear triggers function as analog and the rumble works perfectly. The only caveat is since this is a Nintendo controller, AB and XY are in their respective Nintendo locations, so the bottom button presses as B and the right button presses as A and so on. In Nintendo games, it works as it should. In most PC games, though, you may need to remap the buttons accordingly.
This throws me off enough in some games that I am using the Dualshock 3 controller + adapter instead (which maps the same as an XBOX 360 controller. )If Mayflash releases a driver that will allow the user to change the ABXY mapping, this would definitely be my wireless controller of choice for PC gaming.
I thought I might have to key-map the inputs but this isn't the case. Buttons and directions are assigned to games as you would keys. I had no problems with range in my sitting room, I haven't tried using the controllers beyond that distance.There were no problems pressing several buttons at the same time (an issue with keyboard mapping) and there was never any missed lag or missed inputs.
My xbox-360 controller was wearing out my USB sockets on my laptop, so I looked around for some wireless options. Decided that the Wii-U pro controller would be my next best bet and went over to my local B&M; store to get one. My laptop had a bluetooth dongle embedded onto the mobo so I thought I wouldn't need anything further.
The Wireless Wii U Pro Controller Adapter for PC USB is surprisingly small with a long USB cord. The build quality seems fine.The adapter comes with a mini CD that installs drivers for the adapter, the software is tiny and has no bloatware or obtrusive tray items, you'd never know it was installed.I have two official Wii U Pro Controllers and have had no problems connecting both to the adapter.
I bought the Mayflash SNES to USB adapter before for emulation purposes, and while that worked (and still works) great, I wanted to be wireless while gaming on my HTPC in my living room. I wanted something close to the original SNES pad as possible, and while the Dualshock 3 and 4 are excellent, they don't feel like a Nintendo product. I got this adapter to use the Wii U Pro Controller and it works without a hitch.
Their equipment: the Wireless Wii U Pro Controller to PC USB Adapter.In short, it takes one of the few really good features of the Wii U and breathes new life into it by taking it away from the Wii U and employing it elsewhere. Easy install, low power consumption (unlike Microsoft's 360 Controller adapter, if you remember THAT failure) and sleek design make this one of the best third-party accessories on the market--especially if you like couch coop and are a PC gamer.
Once that awkward window has passed, the controller remains connected and functions just fine. Alternatively, I can sync the controller in Xinput mode, which remains active as long as the adapter is plugged in, and then switch to Dinput to avoid some of the hassle.The Wii U to PC is the closest I've come to a perfect adapter from Mayflash. If not for the unreliable and worrisome connection in Dinput mode, I would consider it perfect.
Answer: Not that I've found. Played though both Batman: Arkham Asylum and Arkham City using this with my Pro Controller without lag, or any other incidents. Works great!