Pros: Is a wireless illuminated keyboard

Cons: mine (refurb) came with ALKALINE batteries in it... or non-rechargable....

Overall Review: Minw works good and well out of the box, except mine came with alkaline batteries in it instead of the rechargeables it ought to have. I had dropped and broken my old K800 and this one is a replacement. when i plugged it into the charger it lit one red LED... which logitech says the keyboard is bad... i looked at the batteries and they were PILE ALCALINE batteries... best i can tell they are French alkalines... cannot be recharged. well i took the rechargable batteries out of my old keyboard and put them in this refurbed unit and now it works normally.... BEWARE of this. I'd recommend pulling the battery cover on reciept and make sure they are rechargeable and NOT ALKALINE. I'm not returning it for this problem, but if you dont have a set of rechargable AAs around it may mean problems for you... Just a heads up....

Pros: I bought my set of these back in 2011. theyre on a 24/7 windows 7 gaming PC. not one problem ever out of them. setup was simple. intel XMP

Cons: none in four years.

Overall Review: These were so reliable i'll be buying g.skill stuff whenever i need ram later on. can't beat it with a stick.

Pros: Worked perfectly out of the box. no problems with anything. connects 2.4Ghz and 5Ghz at the same time.

Cons: none so far

Overall Review: Pretty simplistic to setup. if you want a hook it up and go solution this one seems to be that. if you want lots of setup options it does that well also.

Pros: worked out of the box. its fast

Cons: none so far

Overall Review: I bought this to put in my Dell Inspiron 7547 Laptop. works wonderfully, no problems,

Pros: Worked out of the box for me. 3.63TB Formatted Capacity says Windows 7. it works, I run my PC 24/7 no problems yet. it's fast for an HDD. ATTO highest benchmark was 165,021 Read and 156,674 write MB/sec.

Cons: none so far