Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Would this work to switch between two USB webcams without much video interuption?
Document: My rating reflects the misleading product description, which claims that this switch works with external hard drives (i.e., devices that can really benefit from 5GB/s data transfer rates). I purchased the switch to share a Western Digital My Passport hard drive between two computers and it failed. On the other hand, the switch seems to work with devices such as webcams, camcorders, video cameras, but those devices do not really take advantage of USB 3.0 superspeed, do they?
The SIIG USB switch does exactly what I was hoping it would. I'm currently using it to easily switch all my peripherals (Razer Mouse, Mechanical Keyboard, USB headset, External HDD, Bluetooth Adapter, HP printer, and Webcam) from my personal computer to my work laptop without having to unplug anything.
I use my work laptop and my home desktop computers with the same monitor, keyboard and mouse. My monitor will switch between inputs with the touch of a button and the KVM switches I've tried all had less than acceptable video. The Desktop has USB 3.0 but the laptop has only 2.0, but the switch works with both. I have a 7 port 3.0 hub with the keyboard, mouse, scanner, printer and a 3.0 thumb drive to transfer files between computers.
I've been using a single monitor analog KVM (Keyboard Video Mouse) switch to access my desktop and laptop machines at work through a single set up.
Bought this because I have both a windows pc and ubuntu box. The idea was to have one monitor showing my pc while the other shows ubuntu without having separate kb/mouse for each desktop. There are some issues with ubuntu, but I believe it to be a software issue and not related to this adapter. Eventually I began using a free software called synergy. I would suggest that for anybody running multiple os'.
combined with the Plugable UD3000 USB 3.0 Docking station; this is the perfect way to link one's peripherals with a single external display with two computers, work & personal. Simple to set up, simpler to use, usb powered so does not require it's own power source.Description does not clearly state it but it comes supplied with 2 USB 3.0 cables (short but work).
If the connected device is unpowered, such as the typical compact hard drive, the switch may not be able to drive the output cables and/or PC interface even if not daisy-chained. Powered drives are OK. The answer, again, is a powered USB 3.0 hub for the outputs.3. Won't drive an extended USB 3.0 cable without using a powered hub.I don't consider the foregoing as flaws. These sorts of issues are common when using unpowered USB devices.
I've been using this at work to connect two computers to the same printer, and it's been working great. The selector buttons light up to let you know what channel is selected.
If you have a USB 3.0 device you need to switch between two computers, this is the way to go...Works perfect and switches instantly. I use a 1T WD PASSPORT to transfer files between two PC's and it is fast! Love it!
Works as advertised. Beats swapping cables manually. If you daisy-chain two of them you then have a nice 3 to 1 switch. Odd how there are so few USB 3.0 switches on the market. Now for the caveat ...These are unpowered units so note the following, taken from personal experience.1.
Answer: The SIIG website states, "Shares a SuperSpeed USB 3.0 Device Between 2 Systems" which means it will share one webcam between two destinations; like one video recorder and one laptop.  However USB is a two way street and it may work the other way around.  If it works, there may be about a one to five second delay depending on the processor for it to recognize the changed source.  It may be faster if both cameras are the same brand and model with the same drivers.  Different cameras will require the processor to load different drivers (plug and play) which is totally dependent on your processor speed and setup.