Instruction: Answer the given question using the supporting document.

Input:
Question: Is this card is dual band: 2.4 GHZ and 5.0 GHZ  same time?
Document: I have a linksys EA4500 N900 router. Its 450Mbps+450Mbps dual band. The Intel 7260 AC only connects at 300mbps on 2.4Ghz or 5Ghz or dual 2.4Ghz and 5Ghz. This card will only connect faster than 300Mbps if you have an "AC" router.UPDATE: 8/JUNE/2014Installed drivers 17.0.2.5 and my upload speeds went to 2MBps (16Mbps) but the connection says 866Mbps or slightly lower.
This adapter brought my 2.4 GHZ network to a hault. It would work fine for a while then I would look at the network speed on the router and the it would be 5.5 mps. Disconnect the adapter and check from another computer and it would be normal. It also would drop the 5 Ghz band altogether, it would drop my network and not identify any 5 GHZ networks until device was disabled and enabled. I tried two sets of drivers to no Avail.
I can confirm this card functions in a Samsung ATIV 5 notebook running Windows 8.1. Replaced the existing single band Atheros OEM wireless card.I can actually use my dual band router now and have risen above the 2.4ghz interference from the multiple neighboring access points.
I replaced the factory Intel 112BNHMW (Intel WiFi Link 1000) with this wifi card and it is an amazing upgrade if you have a dual band Wireless-N or a Wireless-AC router. I am giving it only 4 stars because the bluetooth drivers do not work properly. I am not able to use the built in bluetooth. So if you are buying this for its bluetooth functionality, look elsewhere.
I swapped out my stock wireless card on my laptop in order to upgrade out wireless n connection to dual band. The connection works well and have had no problems since initial installation 5 months ago.
From attempting Intel support, I gather that the Bluetooth 4.0 is an after thought with little effort to get the Bluetooth reliable. When it works, Bluetooth audio goes for an hour or two. When the Bluetooth audio stops working (and it always does), the only method to restore the Bluetooth to a working state is a reboot. Yes, I wasted significant time on this trying different hardware and different Bluetooth devices. The quality problem is clearly poor Bluetooth drivers.The WiFi is great!
!Connected to an Asus AC66U(ASUS RT-AC66U Dual-Band Wireless-AC1750 Gigabit Router)-> Moto SB6121(ARRIS / Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem - Retail Packaging).Web pages just pop up, streaming data moves at the max speeds of my provided cable service connection! Love it!
It seems impossible in today's market, but my new convertible laptop came equipped with only a single channel card. I immediately ordered this one and swapped them out. I have both channels running in my house, the 2.4 for older devices and the 5 for newer. I would recommend this upgrade to anyone stuck with only the 2.4.
I've had problems with the Intel Centrino Advanced-N 6230 that shipped in my Dell XPS15 (L502X running Win8 64 Pro) from day one. I would see pings timing out and WLAN disconnects with many combinations of Dell/Intel drivers. The Dell fixes would temporarily resolve the issue, but it always came back. After the MS patches of Aug/Sept 2013 the problem became intolerable. I saw the issue across 3 separate Wireless routers and on both the 2.4 and 5 GHz bands.
Popped right in and works phenomenally well on both ghz bands. The added 4.0 Bluetooth also is great in this card. I've been able to reduce power consumption to save battery without adversely affecting my speed.
Answer: It will connect to either frequency, but only one at a time, of course. You can see all available connections from both bands.