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Reviews (4)
18 March 2022
Maybe my favorite NIC, the NC523SFP!
These HP NC523SFP cards are amazingly useful. Tgey are a bit annoying to upgrade the firmware on, and if you don't use them in a proper high air-flow server-grade computer case they REALLY want a fan booster to be fitted to keep them cool...but I find them hard to out-perform, especially at this price. The two ports on it are SFP+. I use the ports for 1Gb, 1.25Gb, and 10Gb links via either fiber or copper. I'm about to try getting fancy and bonding 10Gb fiber-optic links together to have a 20+20Gb link (more or less) to my Arista switch so I can hopefully have an insanely-quick file server on my network. Insane for a home user, anyway, though I'm more of a pro-grade home user/I.T. professional.
The drivers can be a little annoying for Windows 7, but mine DID work fine when I told it to run the installer in a Server 2008 SP1 compatibility instance. I even got the fancy link-checking tools in the driver and all those useful things.
The card runs pretty hot, but I cool it with a 40×20mm booster fan, or a 60mm fan would be almost perfectly sized for the job. Ideally, just have it in a high-airflow case like they were designed to be...but if you don't have that, point a fan at it and enjoy up-to-dual-10Gb speeds!
One curious bonus of these cards; I have two if them in my IPFire firewall. IPFire says quite clearly that it can't separate dual-port cards, but it is quite cheerily using half of one card to my Arista, and the other half of the same card to link to my Brocade, which is even on its own different subnet! I am still setting that all up and need to speed-test it to be 100% sure...but so far it seems to be using each half independently without any issues or slowdowns!
You can use new SFP+ "10Gbps max" transceivers in this, or even use the 1Gb-max SFP-regular transceivers as you wish. It kinda makes upgrading easier, in the "1Gb fiber for now, until I can buy a full set of 10Gb transceivers!" type of way, at least!
They aren't the simplest to install, and turning your grandparents loose and letting them install one themselves is just asking for tears and woe...but for semi-pro-and-pro grade use, these cards are amazing and cost-effective!
Added pics of one fan-modded card and a collection of a number of the transceivers which I have so far used with these cards. The other pic is the rump of my firewall-pc showing two NC523SFP cards, a wifi card, and using the on-board NIC for my ISP connection. Both cards have 40mm radial fans mounted to cool them since this case is not very "energetic" regarding air-flow.
Apologies if the focus is sub-par, I let Ebay's app take its own pics and I can't tell if they're both in focus.
28 December 2021
A useful little ultrasonic fog emitter!
I don't generally review "oddments" like this, but it's pretty fun and does what I'd hoped it would! The only real down-side to them is not really their fault; the ultrasonic "shotgun blast" that shoots the water into freed vapor makes it spit water drops 8-12 inches into the air like a mini hydro-volcano!
It makes a good bit of cold vapor and looks really neat. I wanted it to help fix low humidity in my house this winter. It would do the job, but messily. I'll play with it and figure out a way to best use it...maybe feed a "waterfall-river" over it and "out from a cave" to get the vapor with less splatter...
I made an amusing mistake at first; ultrasonic devices require some level of minerals-and-particulates in the water to be able to make fog. I first tried to use pure distilled water and was confused by it doing nothing. Adding a bit of tap water fixed things.
It threw up a good supply of mist until I put the emitter into water too deep for it. They tell you the water-depth to use, I was testing it in deeper water for my own amusement. Don't run it too shallow; I didn't run mine dry for longer than it took to lift it out and unplug it, but running it dry may damage the emitter, and/or maybe it'll overheat. I found it to work in a decent range of water depths. The emitter is pretty effective. It would likely be great in a decorative yard-pond or the like, or to use a collection of them for stage effects and stuff.
I'd normally do a review on computer or electronics stuff, so for whatever it's worth, this little thing amused me enough to get me to do a review for it.
23 July 2021
Very effective, very loud. Seems nicely built!
This monster is in no way 'quiet' in comparison to consumer-grade case fans...but if you need to cool some serious gear and need to move a LOT of air to do it without minding a bit of noise, this is an excellent fan. And it's a lot quieter if you scale its voltage down to 10.5 VDC or so, while still moving a good bit of air at that voltage.