Do these need to be installed in pairs?
1622142
No. I had a pair of 1GB's and replaced one with this purchase and it gave me a total of 3GB's, so it should work for you too, as long as this is the correct spec for your particular computer (Your computer tech rep can tell you that).
1622143
You don't need a pair of these unless you want more RAM memory. 2 gigs is about the minimum to run something like Windows 7.
1622144
I don't think so, because I bought only on 2GB it worked along with other (3 times) 1GB I have.
1622145
No. You can install one or two. On my wife's computer she had 1 gig of RAM (2 x 500mb). I replaced one of the 500 mb with a 2 gig. She now has 2.5 gigs of RAM.
1622146
I went to the mother board manufacturers web site and read the manual for my board and followed their insturtions
1742718
Mine were in a pair. However I would not reccomend these. They failed after just 3 months
836868
Yes, they only come in pairs. I would never think of going up on a ladder to a roof without them.
628926
They come as a pair so order 1. You also need load bars and feet so check Thule site to make sure you have everything you need!!
77952
I don't know about using them in pairs. We have a simple pushbutton entry. The batteries last a year or so on ours, but we don't have a whole lot of traffic. We use Duracells.
2060701
They are in pairs. But as long as you don't take the slip off it won't be activated, so you should be able to use one by one.
1455453
No. You need 18-5775, and they need to be replaced as a pair so you'll need two of them.
1814726
Yes they can. Directions are in the installation guide. I did do it so don't know how hard it is.
1472632
No, they must be ordered seperatly as do the front ones. I found a place to order them both, front anf rear - then they are easy to mount. The brackets are sold in the needed pairs even though it said 'each' they came in twos. mount one up/side down each part to make left right.
1130926
Hi Michael. I am not that much of an expert. However, they came in a pair. So I just put both of them on.
1916925
They are designed to side by side. (You would be missing a side if separated.) But if you had multiple sets, you could change up the configurations, or add to. Hope that helps.
1469529
as best i recall, when i got mine it came as a pair. if its not clearly stated then i would assume they come as a pair, but i can't say with 100% certainty.
1605445
I believe their sold in pairs, you can use this for center rear if you have that option with your system.
2223038
Yes they are sold in pairs. Work great on those low front end vehicles. As a foot note I had to also purchase the extenders to ensure I could get my 2014 corvette on the ramps.
1802945
It was for the pair. Installation was not hard. It took me about 1 hour and 20 minutes to do the first one and only about 20 minutes to install the second one - hope this helps
1190592
They come in pairs, you will need to order the front pair and the rear pair, which will most likely be different.
2251343
We searched around for this item and always found them together. I don't see any reason why you couldn't install them separately though.