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

Input:
Question: Has anyone successfully used it with mac?
Document: It works just as well as any PS/2 to USB adapter I've ever used, so I'd recommend this to anyone who needs one.
I have used this to connect classic IBM Model M keyboards to my Macbook Pro as well as to my Mac Mini. It is detected by OS X as a "PS/2 to USB converter" and works perfectly. I am using Spark to assign Print Screen, Scroll Lock and Pause to Volume Up/Down/Mute (after disabling the system control for brightness on F14/F15 since that conflicts).
I connected my old, IBM-type keyboard that I used with my old PC to my Mac G5. It works perfectly - no delays. I keep my Mac keyboard connected to my Mac, too, so I can use the Mac-specific command keys. I am a writer and a typist; therefore I wanted a real keyboard with the proper key spacing that I could type fast and comfortably on.
Started poking around in the registry (seemed to be a driver problem) found that if I search for and removed all registry keys that have the term "Office Keyboard" I can reinstall the keyboard adapter successfully and the keyboard works again for a while.
I can't locate the manufacturer to see if they'd be willing to do the right thing and replace the product or give me a full refund (if anyone from Amazon.com is reading this, please let me know if there's any recourse).Initially, I gave this product a five-star review. Too bad it falls apart so quickly.
I had high hopes for this device. However, while it was recognized by Windows and the driver loaded successfully it would not work with my Logitech trackball mouse. I did try several different adapters from Amazon but only one worked great - see my other reviews for the right one to buy.
I have an old Logitech MarbleMouse which is PS/2. I use it with a new netbook and an older laptop since I didn't want to buy a new mouse for rare use. I cannot comment on how the Adesso adapter works for any PS/2 keyboard, only this mouse, and for that it has been perfect. The mouse is immediately recognized and never had any glitches. For anyone who dislikes touchpads and has a good old PS/2 mouse, this will make the mouse useful again.
Works like a champ. Allowed me to use my PC keyboard and mouse with my Apple Mac mini desktop.
I bought this so I could hook up my keyboard and mouse from my old pc to my mac mini it works great.
I tried a number of different USB adapters to connect my IBM "clicky" keyboard to my Mac. This is the only one that worked, and worked perfectly. Don't scrimp. Just buy it.
Answer: From:  https://discussions.apple.com/thread/1981786?tstart=0Kenichi WatanabeThis helped meRe: PS/2 USB Converter; Will it Work with iMac G3?Apr 19, 2009 9:44 PM (in response to Nihongoking123)Adapters that make USB keyboards work with PS/2 ports are simple and common; they are just wired to change the shape of the connector. The USB keyboard just needs to be designed so it can work with those older ports (through that adapter). However, for PS/2 keyboards that were made before USB ports, they are not designed to work with USB. So I don't think it will work unless you have a more complex adapter... one that may need a driver. If it needs a driver, you will probably not get Mac compatibility, because Macs never used PS/2 ports. The older Mac serial ports were called ADB ports, and to use an older Mac (non-USB) keyboard on a Mac USB port, you have to get a special (non-simple) adapter called the Griffin iMate. So you would need something equivalent to the the iMate, except for PS/2 keyboards, that works on a Mac (with maybe a need for a Mac driver).If would be far easier to get a USB keyboard and USB mouse. Generic ones cost less that $10 for each, which is probably less than the cost of a Griffin iMate -type device.However, using Google, I did find devices like this one that claims Mac compatibility.http://www.usbgear.com/USBTO_PS2CONVERTER/This is obviously not a simple $5 adapter, but this one adapter does connect both the PS/2 mouse and keyboard to one USB port, which will save you a port (just like with a REAL Mac USB keyboard and mouse).Various including Intel iMac, Power Mac G5, Pismo w/G4, Power Mac 8100 w/G3, Mac OS X (10.5.6), also Mac OS X 10.4.11, Mac OS X 10.3.9, and Mac OS 9.x