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Do passive USB extenders (25ft) introduce more or less latency (input delay) than an active (repeater) extenders

post #1 of 2
Thread Starter 
I'm trying to get my hands on a 25ft USB extender cable, along with an HDMI cable, to run from my PC in the room into the living room and then attach a USB hub to it, so I can use a wireless keyboard / mouse / PS4 controller to use on my LCD screen. I plan to do gaming with keyb/mouse, but also with the game-pad.

I'm getting mixed information. The spec for USB 2.0 says that setups beyond 5 meters (approx 16 ft 5in) will not work. It also says that "repeaters" beyond that spec will "regenerate the USB signal."

3 important questions about this:

1. When they say that USB is limited by 5 meters, are they talking about the power that can go through that cable or the data itself? (I don't really know how a USB cable works internally, but I'm assuming there's a data + power rail on it)

2. which aspect of whats traveling through the cable will be "regenerated" by a repeater?

3. Practically speaking, and in terms of input delay (latency), would I be better off with a 25 ft cable with or without a repeater if I plan to put a USB hub with 4 ports at the end of it?

What if I choose to only use the PS4 pad without a USB hub, which cable would be preferable?

Thanks to anyone who takes the time to read this. smile.gif
post #2 of 2
Quote:
Originally Posted by Spellbinder2050 View Post

I'm trying to get my hands on a 25ft USB extender cable, along with an HDMI cable, to run from my PC in the room into the living room and then attach a USB hub to it, so I can use a wireless keyboard / mouse / PS4 controller to use on my LCD screen. I plan to do gaming with keyb/mouse, but also with the game-pad.

I'm getting mixed information. The spec for USB 2.0 says that setups beyond 5 meters (approx 16 ft 5in) will not work. It also says that "repeaters" beyond that spec will "regenerate the USB signal."

3 important questions about this:

1. When they say that USB is limited by 5 meters, are they talking about the power that can go through that cable or the data itself? (I don't really know how a USB cable works internally, but I'm assuming there's a data + power rail on it)

2. which aspect of whats traveling through the cable will be "regenerated" by a repeater?

3. Practically speaking, and in terms of input delay (latency), would I be better off with a 25 ft cable with or without a repeater if I plan to put a USB hub with 4 ports at the end of it?

What if I choose to only use the PS4 pad without a USB hub, which cable would be preferable?

Thanks to anyone who takes the time to read this. smile.gif

Its mostly power based because once you get that far the power that can be drawn is too low to run devices efficiently. Most systems nowadays have the power output to run longer cables. I've used tons of extenders and i havent had any major issues, i wasnt able to start a external hard drive sometimes but wireless mice and such will do just fine. if you want just pick up a powered usb hub and you will be fine for anything you want to run, latency wise you wont really notice if you are already wireless with the mouse. repeaters will normally repeat both power and data, usb is 4 pins 2 power 2 data i believe. like i said if you are using anything wireless you wont notice any larger gap then there already is, and wired wise unless its a super power hungry mouse there shouldnt be too much at all if any noticeable. Ps4 pad without a hub eh, you should be ok, it might not charge full speed depending on the usb power it receives as a whole but it should work. i dont know all the specifics so i cant say exactly but you should be good. i do hope this helps.
Koji
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Koji
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CPUMotherboardGraphicsGraphics
I7 6700k Stock For Now Asus z170 Deluxe EVGA SSC GTX 960 4GB EVGA SSC GTX 960 4GB 
RAMHard DriveCoolingOS
Crucial Ballistics 32GB 4x8GB 2666Mhz Adata SP550 480GB SSD Cryoig H5 Ultimate White Win 10 
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Vizio 24" 1080p 5ms Thermaltake Challenger Ultimate RBG EVGA SuperNOVA 1000 G1 NZXT H630-W 
MouseMouse PadAudio
Razer Chroma Razer Goliathus Control Logitech 5.1 Surround / Razer Kraken 7.1 Headset 
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