Bought S3900 stackable switches before. Their dual power supply and LACP do us a great favor. Now we plan to buy more for stacking to connect the PCs and printers in our new office. The AM responds quickly, and asks about the numbers of our PCs and printers. The guy recommends the 48 port S3900-48T4S, coz it can meet our connecting need and can be stacked with our existing S3900-48T4S switch. Then, we discuss with the AM, and make a final draft for the whole connection. Finally, we get two S3900-48T4S and matched DAC cables for stacking. All the products work great and the support team is great to work with.

S3900-48T4S 48-Port 10/100/1000Base-T Gigabit Stackable Managed Switch with 10GB SFP+ Uplinks

Well what to say about this, well as you would know FS.COM is probably famous for their super cheap GBics and Fibre Optic Cables and the like, to be honest I was skeptical. I’ll elaborate on this more in a little while
I have been working in a High School for 20 years and we have always been a Hewlett Packard HP or CISCO school. When I first started in 1999 we had a bit 80 port switch and not knowing any better we stuck with this brand.
Being in a small school, we do not have the budgets of other big schools and so bang for our buck Value for Money is extremely important to us. Recently we were approved to upgrade our aging infrastructure and move to 10 gigabit networking. We had to of course get our 3 quotes so we approached our Hewlett Packard supplier and also just to see if we were in the mix the department of education’s CISCO supplier. We got two quotations back to do 7 switches and a fibre optic back bone one at about $35,000.00 AUD and another at about $37,000.00 AUD. When I spoke to our principal he almost fell off his chair and said that there would be no way we would be able to approve that amount of money you will have to stick with the networking gear you have and we will just have to put up with it.
We hit the Department of Education’s forums and I was pointed at FS.COM. We had a look at their gear and on paper it beat Hewlett Packard in speed, throughput and it was about 35 of the cost. We thought to ourselves this is too good to be true.
So we decided after a lot of talking with Ellen Wang and Gladys Yang who have been extremely helpful in this whole process and answered all of my questions as dumb as some of them may have been. That we would obtain a sample.
We were provided with S3900-48T4S 48-Port 10/100/1000Base-T Gigabit Stackable Managed Switch with 10GB SFP+ Uplinks and I tell you it is just a sensational little unit for what it is. We also purchased some 10 Gig Gbics and some direct attach cables and plugged them in.
We transferred over 300 Gigabytes in about 7 minutes and 30 seconds. These were very large Virtual Machines and we got according to Windows Explorer through a file transfer we were able to get anywhere between 380 MB per second to 430 MB per second steady.
We also transferred performed the same test with our newly acquired CISCO switch that was supplied by the department for our wireless controller.
We also transferred the same 300 Gigabytes in about 9 minutes. The main thing we noticed with this switch is that after a file transferred successfully the throughput dropped to 0 MB per second for a number of seconds. This switch was slightly faster however at about 420 MB per second up to about 470 MB per second but because it stopped after each file transfer it took longer to get back up to speed where as the S3900-48T4S 48-Port 10/100/1000Base-T Gigabit Stackable Managed Switch with 10GB SFP+ Uplinks was stable at its 380 MB per second – 430 MB per second and was able to get the job done easily.
We were able to do this test several times and it performed exactly the same over at least 3 repetitions of this test. When we logged the switch to watch its performance we did not see the processor go above 50 of its switching capability. The configuration is very simple to understand and everything is reachable a couple of clicks.
If there is something that you can’t understand then the Technical Support is also fantastic. We are planning to do the rest of our infrastructure upgrade with FS.COM because not only are we extremely happy and excited to be working with FS.COM.
The products they sell do what they say they will and meet our criteria and our cost envelope. We are very happy and would highly recommend FS.COM to anyone who is looking to really get great value for money, extremely friendly service and a product that can be depended on.

First time using these switches and the performance was better than expected. Full 10 gig testing and we are loving them so far.

Bought this #72946 switch for our office. Before buying, I confirmed with the AM about the acoustic noise since a quiet working environment is crucial for our daily researches, which is in an acceptable value. We placed it in the machine room and found no troubles and influences in the working areas. Quite satisfied.

I need two switches with stacking functions. Four stacking ports each, up to 6 units, this S3900-48T4S switch type perfectly meets my demands. So I chose this as my preference. Restricted by the distances, I then bought pcs of 10G SR modules and LC cables for stacking the switches. Everything works smoothly so far!

You are realy pros . Good job !!!

We have been dealing with FS for over 2 years now. At first we only imported optics and found them to be competitive, responsive and knowledgeable. This year we needed to set up a fiber network for a small business and sourced all of the kit from FS. This S3900-48T4S switch is great, comes with 48 1GB RJ45 ports and 4 10G SFP+ ports, totally covering the current needs and the possibility for future expansion. The 10GBASE-SR SFP+ 850nm 300m DOM transceiver module works well as usual, together with military-grade armored OM3 fiber cable which is fairly priced. I would strongly recommend FS.

Package came a day earlier than expected with no signs of damage. 10GBASE-SR SFP+ 850nm 300m Transceiver worked well with the S3900-48T4S switch.

Got this switch after we ensured its compatibility with our Cisco DAC cables and 10G NIC card with FS guys. It worked without any issues.

I have two of these stacked in my server room. They can fully meet my needs of the customer LAN as an access layer switch. Working flawlessly with no issue. The web UI is pretty intuitive, while there's a cisco-like CLI available via telnet. You can choose the one you’re familiar with. I haven't had to mess with it since configuring it!