[SOLVED] Is USB 3 better than USB 2 for Ethernet adapter if I have speed 80-90 Mbps ?

[fsn761304]

I'm gonna buy a new laptop, which has no network card, so I need to buy Ethernet to USB adapter also.
I need to choose between adapter that supports USB 2 or USB 3.

I use DSL connection, speedtest.net shows speed up to 80-90 Mbps.
I read that if speed is no more than 480 Mbps then no need for USB 3.

But at the same time I read that USB 3 is USB3 is interrupt-driven IIRC and full-duplex whereas USB 2 is half-duplex. Does it change anything in favor of USB 3 in my case ?

 

[jsmithepa]

I wager a laptop wo ethernet doesn't have a USB3 port, so u give it a USB3 dongle doesn't do anything, but it won't hurt, USB3 is backward compatible to USB2.

 

[fsn761304]

It has one (USB 3). That's fashion of these days: more and more laptops on the market have no hole for RJ-45.

 

[USAFRet]

I'm gonna buy a new laptop, which has no network card, so I need to buy Ethernet to USB adapter also.
I need to choose between adapter that supports USB 2 or USB 3.

I use DSL connection, speedtest.net shows speed up to 80-90 Mbps.
I read that if speed is no more than 480 Mbps then no need for USB 3.

But at the same time I read that USB 3 is USB3 is interrupt-driven IIRC and full-duplex whereas USB 2 is half-duplex. Does it change anything in favor of USB 3 in my case ?

What laptop is this?

 

[fsn761304]

Dell 3552

 

[jsmithepa]

What laptop is this?

Best answer ever! 😀

Ya dude, I forgot about vendor going cheap, or too thin to fit a RJ45. USB3 type that much more expensive than USB2? Just give it a USB3 and be done with it. My MacBook has no RJ45 either but I use a thunderbolt dongle, could had use a USB2 dongle but I do make LAN transfers from time to time and need the 1 gbit.

 

[USAFRet]

It already has WiFi built in.
No need for some other adapter.

https://www.cnet.com/products/dell-inspiron-3552-15-6-pentium-n3700-4-gb-ram-500-gb-hdd-english/

Communications - Wireless Protocol
802.11b/g/n, Bluetooth 4.0

Connections & Expansion
USB 3.0
2 x USB 2.0

 

[USAFRet]

But, if you want straight ethernet, get a USB 3. It can't be much more expensive than a USB 2.

 

[fsn761304]

Ok, thanks, guys.