Hi all - rarely do I run into a problem where after scanning the Internet I come up with nothing ? Here it is: The display I just purchased the highly rated Philips 272C4 Monitor. Every review (as well as the specs of the monitor themselves) have this display's native resolution at 2560 × 1440 @ 60 Hz. This is of course the very same resolution of the Apple Thunderbolt display. The Mac MacBook Air circa mid-late 2012 with the following graphics chipset: Intel HD Graphics 4000: Chipset Model: Intel HD Graphics 4000 Type: GPU Bus: Built-In VRAM (Dynamic, Max): 1024 MB Vendor: Intel (0x8086) Device ID: 0x0166 Revision ID: 0x0009 The problem When I plug in the monitor it will only give me 1920x1080 - can go no further. I thought it was my cable - A DVI. I quickly thought to go with HDMI and did the following: Grabbed a Thunderbolt to HDMI cable laying around - plugged it in - no go, stuck at 1920x1080. Ordered from Amazon (in transit). Tried native DVI. No go, tried DVI to HDMI - no go. So - is it the monitor ? Shouldn't be. I plugged it into (native) HDMI--HDMI from my Mac Mini. Stuck at 1920x1080. Both the Mac Mini - and the MacBook air go to 2560 × 1440 no problem via Native Thunderbolt. So...before I return this thing .. Q1: Is it that the Mac's will only drive this resolution with their own proprietary ThunderBolt display ? Q2: Is there a way to update the graphics chip or driver (so easy on Windows machines) ? Q3: Do I have a bad monitor (I would think, highly unlikely) ? Q4: Am I doing something wrong ? Stories of using 3rd party monitors to drive 2560 × 1440 from Mac's are legion - and this monitor is highly rated and has as it's native resolution 2560 × 1440. At an impasse .... Help appreciated, sorry for the long post.