bananbus

Can anyone tel me the size of the razer deathadder 2013 scroll wheel led, theres 2 in the hollow center of the scroll wheel n r rly small.

So i have a mouse with a green led and i want to switch it with a blue one, i found out that both leds have different voltages and amps required thus will it still work? Will the blue led not shine as bright since the pcb was made to only supply a green led which uses a bit less voltage then the blue one?

Ok so im planning to do control some RGB LEDS with an arduino nano by connecting the LED strip to the arduino then connecting the arduino to a self powered usb hub via usb cable which is connected to my laptop where i will program how the LEDS will light up and stuff. The thing is i was planning to power up the LEDS with the usb hub but im not sure about the how much voltage the USB hub outputs and how much current can run through it, can anyone help and tell me what i should and should not do? -LEDS: input voltage of 5V, power of 18watts, which means about a current of 3.6A -USB Hub: "EASYIDEA USB HUB 3.0 4/7 Ports Portable Micro USB 3.0 HUB Splitter With Power Adapter For PC High Speed 5Gbps USB Splitter HUB" from aliexpress Also i saw a guy doing the same thing and powering up the LEDS with his laptop usb port via usb cable and i thought that 3.0 gives out 5v but only has a max current of 900mA so i was a bit confused, can anyone explain?

oh okay thanks

oh ok, so then will a game that runs at 60fps look the same in a 60Hz and 120Hz monitor which is why it is useless to buy the 120Hz?

I was wondering whether it is a good idea to connect an external high refresh rate (120Hz), high resolution monitor to a laptop with a gtx1050 and Intel(R) Core I7-7700HQ 2.80GHz for gaming and movies. Things to think about: -Is it worth it considering the laptop only has an entry level GPU(gtx1050) -Will using an external monitor slow down/ interfere with system performance (decrease FPS n such) -What are the ports needed -What about the resolution? Will a high resolution monitor work if using a gtx1050 Extra info: -Issues about costs aren't of a huge interest -Any suggestions for good monitors with high refresh rates are wanted -I'm not an expert or anything